Therefore, the coefficient of variation for the given data is approximately 24.71%.
What is box plot?A box plot, also known as a box-and-whisker plot, is a graphical representation of a data set that shows the distribution of the data using quartiles. It is a standardized way of displaying the distribution of data based on the five-number summary: minimum, first quartile, median, third quartile, and maximum. The box represents the middle 50% of the data, with the median marked by a line inside the box. The whiskers extend from the box to the minimum and maximum values, or to a certain range if there are outliers. Box plots are useful for comparing the distributions of different data sets and identifying potential outliers.
Here,
1. Stem-and-Leaf Plot:
A stem-and-leaf plot is a way to display data that separates the tens digit of each number from the ones digit. Here is the stem-and-leaf plot for the given data:
3 | 9 9
4 | 2 2 6 6
5 | 1 4 4 6
6 | 1 4 5 5 5 5 5 5
7 | 0 2 3 4
8 | 1 2 2 3 5
9 | 3 4
In this plot, the stem represents the tens digit and the leaves represent the ones digit.
2. Coefficient of Variation:
The coefficient of variation is a measure of the relative variability of a data set. It is calculated as the ratio of the standard deviation to the mean, expressed as a percentage. Here is how to calculate the coefficient of variation for the given data:
Calculate the mean of the data:
Mean = (83+64+51+46+82+91+73+82+65+61+74+64+75+81+94+65+42+81+56+61+72+65+54+39+70+93+42+46+54+72)/20 = 68.25
Calculate the standard deviation of the data:
Standard deviation = sqrt((1/20) * ((83-68.25)^2 + (64-68.25)^2 + ... + (72-68.25)^2))
Standard deviation ≈ 16.88
Calculate the coefficient of variation:
Coefficient of variation = (Standard deviation / Mean) * 100
Coefficient of variation ≈ 24.71%
3. Box Plot:
A box plot is a way to visualize the distribution of data. It displays the minimum value, first quartile (Q1), median, third quartile (Q3), and maximum value of the data. Here is the box plot for the given data:
| +----------+
94 | |
| +----------+
93 | |
| +-----+-----+
82 | | |
| | |
81 | | |
| +-----+ |
80 | | |
| | |
79 | | |
| | |
78 | | |
| | |
77 | | |
| | |
76 | | |
| | |
75 | | |
| | |
74 | | |
| | |
73 | | |
| | |
72 | +-----------------+
|
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
In this plot, the horizontal line inside the box represents the median, the bottom and top edges of the box represent the first and third quartiles (Q1 and Q3), respectively, and the vertical lines extending from the box represent the minimum and maximum values, excluding outliers.
4. To find the 85th percentile, we need to arrange the data in order from smallest to largest:
39, 42, 42, 46, 46, 51, 54, 56, 61, 61, 64, 64, 65, 65, 65, 70, 72, 72, 73, 74, 75, 81, 81, 82, 82, 83, 91, 93, 94
There are a total of 20 scores, so the 85th percentile would be the score at the 0.85(20) = 17th position:
85th percentile = 72
To find the 2nd decile, we first need to calculate the number of scores in each decile. Since there are 20 scores, each decile would have 2 scores. The 2nd decile would be the score at the 0.2(20) = 4th position:
2nd decile = 46
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Complete question:
Please, I need help with this, it's about statistics. Thank you very much. The grades of 20 students who took an admission exam to a certain faculty, using a scale of 0 to 100, were: 83 64 51 46 82 91 73 82 65 61 74 64 75 81 94 65 42 81 56 61 72 65 54 39 70 93 42 46 54 72
• Make: stem-and-leaf plot
• Calculate: coefficient of variation
• Create a box plot
• 85th percentile, 2nd decile.
SOMEONE HELP PLEASE!!!
Find P(C|Y) from the information in the table.
To the nearest tenth, what is the value of P(C|Y)?
A. 0.4
B. 0.5
C. 0.7
D. 0.8
Answer:
The answer to your problem is, B, 0.5
Step-by-step explanation:
We are given the following table below;
X Y Z Total
A 32 10 28 70
B 6 5 25 36
C 18 15 7 40
Total 56 30 60 146
As we know that the conditional probability formula of P(A/B) is given by:
P(A/B) = [tex]\frac{P(AnB)}{P(b)}[/tex]
P(C/Y) = [tex]\frac{P(CnY)}{P(Y)}[/tex]
P ( Y ) = [tex]\frac{30}{146}[/tex] and P(CnY) = [tex]\frac{15}{146}[/tex] [ because of the third column shown ]
Thus, the answer is, B. 0.5
Feel free to ask any questions down below \/ !
In a poll conducted by the Gallup organization 16% of adult, employed Americans were dissatisfied with the amount of vacation time. You conduct a survey of 500 adult, employed Americans.
(3 points) Using the binomial formula (or technology) – find the probability that less than 70 are dissatisfied with their vacation time.
(2 points) Show that this distribution can be approximated by the normal distribution.
(5 points) Use the normal curve to approximate the probability that less than 70 are dissatisfied with their vacation time.
The probability that less than 70 are dissatisfied with their vacation time is approximately 0.000008.
The normal distribution can be used to approximate this binomial distribution.
The probability that less than 70 are dissatisfied with their vacation time is approximately 0.0082, using the normal curve approximation.
How to Solve the Probability?Using the binomial formula:
n = 500
p = 0.16
q = 1 - p = 0.84
We want to find P(X < 70), where X is the number of people out of 500 who are dissatisfied with their vacation time.
P(X < 70) = Σi=0^69 (500 choose i) * 0.16^i * 0.84^(500-i)
Using technology, we can find this probability to be approximately 0.000008.
To show that this distribution can be approximated by the normal distribution, we need to check if the conditions for the normal approximation are met:
np = 500 * 0.16 = 80 ≥ 10
nq = 500 * 0.84 = 420 ≥ 10
Since both conditions are met, we can use the normal distribution to approximate this binomial distribution.
To use the normal curve to approximate the probability that less than 70 are dissatisfied with their vacation time, we need to standardize the binomial distribution:
μ = np = 80
σ = sqrt(npq) = sqrt(500 * 0.16 * 0.84) ≈ 4.58
We want to find P(X < 70), which is equivalent to finding the probability that a standard normal variable Z is less than (69.5 - 80) / 4.58 = -2.37.
Using a standard normal table or technology, we find this probability to be approximately 0.0082.
Therefore, the probability that less than 70 are dissatisfied with their vacation time is approximately 0.0082, using the normal curve approximation.
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6TH GRADE MATH FIND SLOPE IN THE EQUATION
Answer:
Step-by-step explanation:
answer is -2
Let the Universal Set, S, have 158 elements. A and B are subsets of S. Set A contains 67 elements and Set B contains 65 elements. If Sets A and B have 9 elements in common, how many elements are in neither A nor B?
There are 92 elements in A but not in B.
What are sets?In mathematics, a set is a well-defined collection of objects or elements. Sets are denoted by uppercase symbols, and the number of elements in a finite set is denoted as the cardinality of the set enclosed in curly braces {…}.
Empty or zero quantity:
Items not included. example:
A = {} is a null set.
Finite sets:
The number is limited. example:
A = {1,2,3,4}
Infinite set:
There are myriad elements. example:
A = {x:
x is the set of all integers}
Same sentence:
Two sets with the same members. example:
A = {1,2,5} and B = {2,5,1}:
Set A = Set B
Subset:
A set 'A' is said to be a subset of B if every element of A is also an element of B. example:
If A={1,2} and B={1,2,3,4} then A ⊆ B
Universal set:
A set that consists of all the elements of other sets that exist in the Venn diagram. example:
A={1,2}, B={2,3}, where the universal set is U = {1,2,3}
n(A ∪ B) = n(A – B) + n(A ∩ B) + n(B – A)
Hence, There are 92 elements in A but not in B.
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1. A car dealer bought 10 different cars which cost him 5, 3, 2, 6, 7, 2, 3, 9, 3, and 4 thousand euros respectively. a. Find the mean, median, and mode price of the cars he bought b. How will the mean, median, and mode be affected if the dealer sells the cars at a price of 20% more than what he bought each one? c. If each buyer pays an additional amount of 1000 euros for transfer fees, how the answers of part (b) will be affected?
a) The mean, median, and mode price of the cars bought by the car dealer are:
Mean = Euro 4,400Median = Euro 3,500Mode = Euro 3,000.b) If the car dealer sells the cars for 20% more than the purchase prices, the mean, median, and mode prices will increase to:
Mean = Euro 5,280Median = Euro 4,200Mode = Euro 3,600.c) With the payment of an additional Euro 1,000 as transfer fees, the mean, median, and mode prices will increase to:
Mean = Euro 6,280Median = Euro 5,200Mode = Euro 4,600.What are the mean, the median, and the mode?The mean is the quotient of the total value divided by the number of items in the data set. It is also known as the average.
The median is the middle value in an ordered list (ascending or descending).
On the other hand, the mode is the value that occurs most often in the data set.
The prices of different cars:
Car 1 = Euro 5,000
Car 2 = Euro 3,000
Car 3 = Euro 2,000
Car 4 = Euro 6,000
Car 5 = Euro 7,000
Car 6 = Euro 2,000
Car 7 = Euro 3,000
Car 8 = Euro 9,000
Car 9 = Euro 3,000
Car 10 = Euro 4,000
Total value = Euro 44,000
Mean = Euro 4,400 (Euro 44,000/10)
Mode = Euro 3,000
Median = Euro 3,500 (Euro 3,000 + Euro 4,000)
b) Markup = 20%
Cost price = 100%
Selling price = 120% (100 + 20)
Mean = Euro 5,280 (Euro 4,400 x 1.2)
Median = Euro 4,200 (Euro 3,600 x 1.2)
Mode = Euro 3,600 (Euro 3,000 x 1.2)
c) Additional Transfer Fees of Euro 1,000:
Mean = Euro 6,280 (Euro 4,400 x 1.2 + Euro 1,000)
Median = Euro 5,200 (Euro 3,600 x 1.2 + Euro 1,000)
Mode = Euro 4,600 (Euro 3,000 x 1.2 + Euro 1,000)
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find the slope of a line parallel to the line whose equation is 5x - 6y = 30. fully simplify your answer 
By answering the presented questiοn, we may cοnclude that Since a line equatiοn parallel tο this οne will have the same slοpe, the slοpe οf the parallel line is alsο 5/6.
What is equatiοn?When twο expressiοns are equal, a mathematical equatiοn is a statement stating that equality. Twο sides are jοined by the algebraic symbοl (=), and tοgether they make up an equatiοn. Fοr instance, the claim that "2x + 3 = 9" means that "2x plus 3" equals the number "9" is made in this argument. Finding the value(s) οf the variable(s) necessary fοr the equatiοn tο be true is the gοal οf sοlving equatiοns.
There are variοus types οf equatiοns, including regular and nοnlinear οnes with οne οr mοre elements. "x² + 2x - 3 = 0" is an equatiοn that raises the variable x tο the secοnd pοwer. Mathematical disciplines like algebra, calculus, and geοmetry all make use οf lines.
the given equatiοn:
[tex]$\begin{array}{c}{{5x-6y=30}}\\ {{-6y=-5x+30}}\\ {{y=(5/6)x-5}}\end{array}$[/tex]
Sο the slοpe οf the given line is 5/6.
Since a line parallel tο this οne will have the same slοpe, the slοpe οf the parallel line is alsο 5/6.
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I need help on this one to sorry
Answer:
250 and 250.1
Answer:
250.1
Step-by-step explanation:
5002 divided by 20 equals 250.1
All of the following statements related to sample size are true characteristics of qualitative methodology except for which of the following?
The statement based on sample size representing true characteristics of qualitative methodology are smaller sample size, qualitative research and theoretical research of qualitative data.
Some general statements about sample size in qualitative methodology are as follow,
Qualitative research typically involves smaller sample sizes than quantitative research.
The sample size in qualitative research is not determined by statistical power calculations.
But rather by theoretical saturation and the quality of data collected.
The goal of qualitative research is to gain a deep understanding of the phenomenon being studied.
Rather than to generalize findings to a larger population.
Qualitative research often involves purposive or convenience sampling rather than random sampling.
All of these statements are generally true characteristics of qualitative methodology.
If any statement contradicts one of these characteristics,
Then that statement would not be true for qualitative methodology.
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The given question is incomplete, I answer the question in general according to my knowledge:
Write all the statement related to sample size representing true characteristics of qualitative methodology except for which of the following?
A student needs to select 3 books from 3 different math, 3 different physics and 1 history book. What is theProbability that one of them is math and the other two are either physics or history book?
===========================================
Explanation:
There are 3 ways to select the single math book and [tex]4\times3\div2 = 12\div2 = 6[/tex] ways to pick the two other books that are either physics or history (order doesn't matter). This is effectively because we have [tex]3+1 = 4[/tex] books that are either physics or history, and we're using the nCr combination formula.
Overall, there are [tex]3\times6 = 18[/tex] ways to select the three books such that one is math, and the other two are either physics or history.
-------------------
There are [tex]3+3+1 = 7[/tex] books total. Since we're selecting 3 of them, we use the nCr formula again and you should get 35.
Or you could note how [tex](7\times6\times5)\div(3\times2\times1) = 210\div6 = 35[/tex]
This says there are 35 ways to select any three books where we can tell the difference between any subject (ie we can tell the difference between the math books for instance).
-------------------
We found there are 18 ways to get what we want out of 35 ways to do the three selections. Therefore, the answer as a fraction is 18/35
Assume that x and y have been defined and initialized as int values. The expression
!(!(x < y) || (y != 5))
is equivalent to which of the following?
(x < y) && (y = 5)
The expression (x < y) && (y == 5) is an alternative way of writing the original expression, and it will be true only if two conditions are met: first, x is smaller than y, and second, y is equal to 5.
The expression !(!(x < y) || (y != 5)) is equivalent to:
(x < y) && (y == 5)
To see why, let's break down the original expression:
!(!(x < y) || (y != 5))
= !(x >= y && y != 5) (by De Morgan's laws)
= (x < y) && (y == 5) (by negating and simplifying)
So, the equivalent expression is (x < y) && (y == 5). This expression is true if x is less than y and y is equal to 5.
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Complete question:
Assume that x and y have been defined and initialized as int values. The expression
!(!(x < y) || (y != 5))
is equivalent to which of the following?
(x < y) && (y = 5)
(x < y) && (y != 5)
(x >= y) && (y == 5)
(x < y) || (y == 5)
(x >= y) || (y != 5)
My question is the picture
Answer:
B. A student was most likely to have summer as their favorite season, whether or not they have allergies
Step-by-step explanation:
If you look at the chart. There is a majority under the summer column. Both those who have and don't have allergies favor summer.
can someone help me? please
evalute the following function h(x)=3x2+ax-1 for h(3) and find the value for a.
Answer:
Step-by-step explanation:
[tex]h(3)=3\times 3^2+3a-1 \rightarrow h(3)=26+3a[/tex]
But we cannot find [tex]a[/tex] unless we are told what [tex]h(3)[/tex] equals.
olivia and kieran share money in the ratio 2:5. Olivia gets £42. how much did kieran get?
[tex] \huge \: \tt \green{Answer} [/tex]
Olivia and kieran share ratio 2 : 5
[tex] \texttt{olivia's share \: of \: money = £42 }= \frac{2}{7} \\ [/tex]
Total Amount of Money = Olivia's share of money × Reciprocal of olivia's share
[tex] \tt \: = > 42 \times \frac{7}{2} \\ \\ = > 147[/tex]
Kieran's share of Money =
[tex] = > 147 \times \frac{5}{7} \\ \\ = > \sf{ \pink{£105}}[/tex]
-3y+7x ≥ -3y-14
solving linear inequalities
-3y+7x ≥ -3y-14
solving linear inequalities
To solve the inequality, we need to isolate the variable, x. First, we can simplify the expression by adding 3y to both sides:
-3y + 7x ≥ -3y - 14 + 3y
Simplifying the right side, we get:
-3y + 7x ≥ -14
Next, we can isolate x by subtracting 3y from both sides:
-3y + 7x - 3y ≥ -14 - 3y
Simplifying the left side, we get:
4x ≥ -14 - 3y
Finally, we can isolate x by dividing both sides by 4:
x ≥ (-14 - 3y) / 4
Therefore, the solution to the inequality is:
x ≥ (-14 - 3y) / 4
Note that the inequality sign remains the same because we did not multiply or divide by a negative number.
ChatGPT
Consider the following algebraic statements and determine the values of x for which each statement is true.
8=-|x|
Answer:
This is false.
Step-by-step explanation:
Since absolute value bars change negatives into positives and positive into themselves (positives) we can put the example:
[tex]-|8|\\[/tex]
When we remove the absolute value bars, 8 will still equal 8. But, we have a negative, therefore the 8 has a negative after being simplified with absolute value.
x = -8, not positive 8.
Answer:
Ther are no values of x that would make this statement true. There is no solution.
Step-by-step explanation:
by using truth table, find whether the proposition (p ^ q) ^~ (p v q) is a tautology, contradiction, or contingency.
By using the truth table the proposition (p ^ q) ^~ (p v q) represents it is a contingency neither tautology nor contradiction.
To determine whether the proposition (p ^ q) ^~ (p v q) is a tautology, contradiction, or contingency,
Construct a truth table that lists all possible truth values of p and q .
And the resulting truth value of the entire proposition.
Here is the truth table,
p q p v q ~ (p v q) p ^ q (p ^ q) ^ ~ (p v q)
-------------------------------------------------------------
T T T F T F
T F T F F F
F T T F F F
F F F T F T
As we can see from the truth table, there are both True and False results in the final column,
This implies ,
That the proposition (p ^ q) ^~ (p v q) is a contingency, since it is neither a tautology nor a contradiction.
Therefore, using truth table the given proposition is a contingency.
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Determine the length of HK
The length of HK is equal to: A. √768 units.
What is Pythagorean theorem?In Mathematics and Geometry, Pythagorean's theorem is represented by the following mathematical expression:
z² = x² + y²
Where:
x, y, and z represent the side length of any right-angled triangle.
Based on the diagram for right-angled triangle GHK, we can logically deduce that the height splits GK into 2 parts:
Hypotenuse = 8 units.
Hypotenuse = 32 - 8 = 24 units.
By applying the geometric mean theorem for right-angled triangles, we have:
Height = √(m × n)
Height = √(8 × 24) = √(192) units
How to determine the length of HK?In order to determine the length of HK in right-angled triangle GHK, we would have to apply Pythagorean's theorem:
HK² = 192² + 24²
HK² = 192 + 576
HK² = 768
HK = √(768) units.
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Find the measure of ACD
A - 36 degrees
B - 126 degrees
C - 162 degrees
D - 216 degrees
Answer:
C
Step-by-step explanation:
i assume its
C.
what is the Taylor's series for 1+3e^(x)+x^2 at x=0
The Taylor's series for [tex]1 + 3e^x + x^2[/tex] at [tex]x=0[/tex] is :
[tex]1 + 3e^x+ x^2 = 5 + 3x + (3/2)x^2 + (1/3)x^3 + ...[/tex]
What do you mean by Taylor's series ?
The Taylor's series is a way to represent a function as a power series, which is a sum of terms involving the variable raised to increasing powers. The series is centered around a specific point, called the center of the series. The Taylor's series approximates the function within a certain interval around the center point.
The general formula for the Taylor's series of a function f(x) centered at [tex]x = a[/tex] is:
[tex]f(x) = f(a) + f'(a)(x-a) + f''(a)(x-a)^2/2! + f'''(a)(x-a)^3/3! + ...[/tex]
where [tex]f'(a), f''(a), f'''(a),[/tex] etc. are the derivatives of f(x) evaluated at [tex]x = a[/tex].
Finding the Taylor's series for [tex]1 + 3e^x + x^2[/tex] at [tex]x=0[/tex] :
We need to find the derivatives of the function at [tex]x=0[/tex]. We have:
[tex]f(x) = 1 + 3e^x + x^2[/tex]
[tex]f(0) = 1 + 3e^0 + 0^2 = 4[/tex]
[tex]f'(x) = 3e^x+ 2x[/tex]
[tex]f'(0) = 3e^0 + 2(0) = 3[/tex]
[tex]f''(x) = 3e^x + 2[/tex]
[tex]f''(0) = 3e^0 + 2 = 5[/tex]
[tex]f'''(x) = 3e^x[/tex]
[tex]f'''(0) = 3e^0 = 3[/tex]
Substituting these values into the general formula for the Taylor's series, we get:
[tex]f(x) = f(0) + f'(0)x + f''(0)x^2/2! + f'''(0)x^3/3! + ...[/tex]
[tex]f(x) = 4 + 3x + 5x^2/2 + 3x^3/6 + ...[/tex]
Simplifying, we get:
[tex]f(x) = 5 + 3x + (3/2)x^2 + (1/3)x^3 + ...[/tex]
Therefore, the Taylor's series for [tex]1 + 3e^x + x^2[/tex] at [tex]x=0[/tex] is :
[tex]1 + 3e^x+ x^2 = 5 + 3x + (3/2)x^2 + (1/3)x^3 + ...[/tex]
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a rectangle is dilated by a scale factor of 2/3 about the center of the origin. what should the area of the pre-image be?
Answer:
Step-by-step explanation:
kbggfdtddcsfbdfserenis amazing
To investigate hospital costs for pets in a certain state, researchers selected a random sample of 46 owners of parrots who had recently taken their parrot to an animal hospital for care. The cost of the visit for each parrot owner was recorded and used to create the 95 percent confidence interval $62.63±$17.64.
Assuming all conditions for inference are met, which of the following is a correct interpretation of the interval?
The correct interpretation of the confidence interval is We are 95 percent confident that the mean cost of a hospital visit for all parrot owners in the state is between $44.99 and $80.27 that is option A.
The mean of your estimate plus and minus the range of that estimate constitutes a confidence interval. Within a specific degree of confidence, this is the range of values you anticipate your estimate to fall inside if you repeat the test. In statistics, confidence is another word for probability.
Given,
Confidence interval, CI = 62.63 +/- 17.64
CI = ( 44.99 , 80.27 )
The percentage (frequency) of acceptable confidence intervals that include the actual value of the unknown parameter is represented by the confidence level. In other words, a limitless number of independent samples are used to calculate the confidence intervals at the specified degree of assurance. in order for the percentage of the range that includes the parameter's real value to be equal to the confidence level.
Most of the time, the confidence level is chosen before looking at the data. 95% confidence level is the standard degree of assurance. Nevertheless, additional confidence levels, such as the 90% and 99% confidence levels, are also applied.
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Complete question:
To investigate hospital costs for pets in a certain state, researchers selected a random sample of 46 owners of parrots who had recently taken their parrot to an animal hospital for care. The cost of the visit for each parrot owner was recorded and used to create the 95 percent confidence interval $62.63±$17.64.
Assuming all conditions for inference are met, which of the following is a correct interpretation of the interval?
We are 95 percent confident that the mean cost of a hospital visit for all parrot owners in the state is between $44.99 and $80.27.We are 95 percent confident that the mean cost of a hospital visit for the parrot owners in the sample is between $44.99 and $80.27.For all parrot owners in the state, 95 percent of hospital visits for parrot care cost between $44.99 and $80.27.There is a 0.95 probability that the mean cost of a hospital visit for all parrot owners in the state is between $44.99 and $80.27.the formula for converting degrees fahrenheit (F) to degrees Kelvin is K= 5/9 (F = 459.67) Solve for F, terms of K
The formula for converting degrees Kelvin to degrees Fahrenheit is F = (9/5) K + 459.67.
What is degrees Fahrenheit and degrees Kelvin?Degrees Kelvin and Degrees Fahrenheit are two temperature measuring measures that are widely used across the globe. While Kelvin is an international standard unit of measurement, Fahrenheit is mostly used in the United States.
The fact that they measure temperature on distinct scales explains the difference between degrees Fahrenheit (F) and degrees Kelvin (K). Whereas Kelvin is based on a scale of 100 degrees between the freezing and boiling temperatures of water at normal atmospheric pressure, Fahrenheit is based on a scale of 180 degrees between these extremes.
Given that, K = 5/9 (F - 459.67).
To obtain F in term of K we isolate the value of F as follows:
K = 5/9 (F - 459.67)
Multiplying both sides by 9/5, we get:
(9/5) K = F - 459.67
Adding 459.67 to both sides, we get:
F = (9/5) K + 459.67
Hence, the formula for converting degrees Kelvin to degrees Fahrenheit is F = (9/5) K + 459.67.
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6. There are
as many students who wrestle as students who play basketball Ther
20 students who play basketball. How many wrestlers and basketball players are de
altogether?
Use the Read-Draw-Write process to solve the problem.
(uretle
wrestle B Ball
There are 20 students who wrestle and 20 students who play basketball, for a total of 40 students altogether.
What is read-draw-write process?
The Read-Draw-Write process is a problem-solving strategy that can be used to help students organize their thoughts and work systematically through a problem. It involves three steps:
Read the problem: Students should carefully read and understand the problem they are trying to solve.
Draw a diagram or picture: Students should create a visual representation of the problem to help them better understand it and identify any relationships between the different parts of the problem.
Write an equation or statement: Students should use the information from the problem to write an equation or statement that represents the relationships between the different parts of the problem.
To solve the problem using the Read-Draw-Write process:
Read:
There are as many students who wrestle as students who play basketball
There are 20 students who play basketball
Draw:
Let "wrestle" represent the number of students who wrestle
Let "B Ball" represent the number of students who play basketball
Write:
We know that "wrestle" = "B Ball"
We also know that "B Ball" = 20
So we can substitute "B Ball" with 20 in the first equation:
wrestle = B Ball
wrestle = 20
Therefore, there are 20 students who wrestle and 20 students who play basketball, for a total of 40 students altogether.
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FILL IN THE BLANK. If the number of drinks consumed by a small group is 4, 4, 6, 7, and 8, the number 6 would be the _____ for that group.
If the number of drinks consumed by a small group is 4, 4, 6, 7, and 8, the number 6 would be the median for that group.
The median is a measure of central tendency in a set of data, and it represents the middle value of the data set when the values are arranged in order. To find the median of a set of data, we follow these steps:
Arrange the data in order from smallest to largest (or from largest to smallest).
If the number of data points is odd, the median is the middle value.
If the number of the data points is even, then the median is the average of the two middle values.
For example, if we have the data set {2, 4, 5, 7, 9}, we would arrange it in order to get {2, 4, 5, 7, 9}. Since there are an odd number of data points (5), the median is the middle value, which is 5.
If we have the data set {2, 4, 5, 7, 9, 10}, we would arrange it in order to get {2, 4, 5, 7, 9, 10}. Since there are an even number of data points (6), the median is the average of the two middle values, which are 5 and 7. Therefore, the median is (5 + 7)/2 = 6.
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the height y in feet of a ball thrown at a child
a) The initial height is 5 feet.
b) The maximum height is 17 feet.
c) The horizontal displacement is 26.3 feet
How high is the ball when it left the childs hands?The height of the ball is modeled by the given quadratic equation:
y = (-1/12)x² + 2x + 5
The ball leaves the child's hands at the beginning, so to get the height at that point we just need to evaluate this in x = 0, we will get:
y = (-1/12)*0² + 2*0 + 5
y = 5
The height is 5 feet.
b) To get the maximum height we need to find the vertex, in this case the vertex is at:
x = -(2/2)*-12 = 12
Then the maximum height is:
y = (-1/12)*12² + 2*12 + 5 = 17 feet.
Lastly, the ball will hith the ground when y = 0, then we need to solve:
(-1/12)*x² + 2x + 5 = 0
x² -12*2x - 12*5 = 0
x² -24x - 60 = 0
The quadratic formula gives:
[tex]x = \frac{24 \pm \sqrt{(-24)^2 -4*1*-60} }{2}[/tex]
The positive solution gives:
x = 26.3
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Management estimates that 5% of credit sales are eventually uncollectible. Of the collectible credit sales, 65% are likely to be collected in the month of sale and the remainder in the month following the month of sale. The company desires to begin each month with an inventory equal to 70% of the sales projected for the month. All purchases of inventory are on open account; 30% will be paid in the month of purchase, and the remainder paid in the month following the month of purchase. Purchase costs are approximately 60% of the selling prices. Budgeted January cash payments for December inventory purchases by Collection Corporation are:
Answer:
Step-by-step explanation:
Unfortunately, there is no information provided about the sales projections for the month of January or the selling prices of the inventory. Without this information, it is not possible to calculate the budgeted January cash payments for December inventory purchases.
Will is building a rectangular fence around his farm. The total distance around the fence is 54 meters long. The length is 12 meters long, how long is the width?
Thus, the rectangular fence has a 15-meter width.
What does a rectangular fence's area measure?We must determine the fence's length. The equation A=lw, where l seems to be the length & w is the width, determines the surface area A of a rectangle.
Let the variable "w" stand in for the rectangular fence's width.
We are aware that the fence's perimeter measures 54 metres in total.
Since a rectangle's opposite sides are identical in length and the fence contains four sides, we may write the following equation to get the perimeter:
(Length + Width)2 = the perimeter
Inputting the values provided yields:
54 = 2(12 + w)
After simplifying and finding "w," we arrive at:
54 = 24 + 2w
2w = 30
w = 15
Hence, the rectangular fence's width is 15 meters.
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Ruhama scores 75, 80, 85 and x in four subjects. For what value of x, Ruhama's average is less than 80?
Answer:
Therefore, for Ruhama's average to be less than 80, the value of x must be less than 80.
Step-by-step explanation:
Let's use the formula for the average (or mean) of a set of numbers: average = (sum of numbers) / (number of numbers)
To find the value of x that makes Ruhama's average less than 80, we need to solve the following inequality:
(75 + 80 + 85 + x) / 4 < 80
Multiplying both sides by 4 gives:
75 + 80 + 85 + x < 320
Simplifying:
x < 320 - 75 - 80 - 85 x < 80
The Venn diagram here shows the cardinality of each set. Use this to find the cardinality of the given set.
With the help of the given Venn diagram, the answer of n(A∪B) is 44 respectively.
What is the Venn diagram?A Venn diagram is a visual representation that makes use of circles to highlight the connections between different objects or limited groups of objects.
Circles that overlap share certain characteristics, whereas circles that do not overlap do not.
Venn diagrams are useful for showing how two concepts are related and different visually.
When two or more objects have overlapping attributes, a Venn diagram offers a simple way to illustrate the relationships between them.
Venn diagrams are frequently used in reports and presentations because they make it simpler to visualize data.
So, we need to find:
A ∪ B
Now, calculate as follows:
The collection of all objects found in either the Blue or Green circles, or both, is known as A B. Its components number is:
8 + 7 + 14 + 6 + 1 + 8 = 44
n(A∪B) = 44
Therefore, with the help of the given Venn diagram, the answer of n(A∪B) is 44 respectively.
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show that the properties of a probability distribution for a discrete random variable are satisfied.
The properties of a probability distribution for a discrete random variable ensure that the probabilities assigned to each possible value of the variable are consistent with the axioms of probability and allow for meaningful inference and prediction.
The properties of a probability distribution for a discrete random variable are.
The probability of each possible value of the random variable must be non-negative.
The sum of the probabilities of all possible values must equal 1.
The probability of any event A is the sum of the probabilities of the values in the sample space that correspond to A.
These properties are satisfied because the probabilities of each possible value of a discrete random variable are defined in such a way that they are non-negative and sum to 1. Additionally, any event A can be expressed as a collection of possible values of the random variable, and the probability of A is then computed as the sum of the probabilities of those values.
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