Answer:
Range: 40
Mean: 75.5
Median (a.k.a. media): 75
Mode: 75
Step-by-step explanation:
1) Put the numbers in order
60 , 60 , 65 , 75 , 75 , 75 , 75 , 75 , 95 , 100
2) Find the range
To find the range, you subtract the largest number from the smallest number. In this case, it those are 100 and 60 respectively.
100-60 = 40 which means the range is 40.
3) Find the mean
To find the mean, you add all the numbers together and then divide that by the number of numbers. So...
60 + 60 + 65 + 75 + 75 + 75 +75 + 75 + 95 + 100 = 755
755/10 = 75.5
*You divide by 10 because there are 10 numbers*
That means your mean in 75.5.
4) Find the median (a.k.a. media)
To find the median, you must find the number that is in the middle when the numbers are in order.
In this case, we have two numbers in the middle 75 and 75. To find the median we must add these two numbers together and then divide by 2.
75 + 75 = 150
150/2 = 75
That means the median is 75.
5) Find the mode.
To find the mode, you must find the number(s) that appear the most. In this case, that would be 75 as it appears five times in this number set.
That means the mode is 75.
I hope this helps!
The cooler at a picnic contained 4 apple juice boxes, 8 orange juice boxes, and 6 fruit punch juice boxes. A juice box is selected at random. What is the probability of the complement of choosing an orange juice box? (first answer will get brainliest)
1/18
4/9
5/9
17/18
Answer:
[tex] p(O)=\frac{8}{18}=\frac{4}{9}[/tex]
And since we want the complement of choosing an orange juice box the answer would be:
[tex] P(O') =1 - P(O) = 1-\frac{4}{9}= \frac{5}{9}[/tex]
And the nest answer for this case is:
5/9
Step-by-step explanation:
For this case we know that we have 4 apple juice boxes, 8 orange juice boxes, and 6 fruit punch juice boxes, so then the size of the sample space is:
[tex] 8+4+6= 18[/tex]
Then we can find the probability of selecting an orange juice box with the definition of Laplace given by:
[tex] p =\frac{possible}{total}[/tex]
And for this case the possible cases are 4 and the total 18 so then the probability is given by:
[tex] p(O)=\frac{8}{18}=\frac{4}{9}[/tex]
And since we want the complement of choosing an orange juice box the answer would be:
[tex] P(O') =1 - P(O) = 1-\frac{4}{9}= \frac{5}{9}[/tex]
And the nest answer for this case is:
5/9
A show has 4,320,000 viewers for it's season premiere express this number using scientific notation
Answer:
4.32 × 10^6= 4.32 × 10^6
(scientific notation)
= 4.32e6
(scientific e notation)
= 4.32 × 10^6
(engineering notation)
(million; prefix mega- (M))
= 4320000
(real number)
Hence number using scientific notation is 4.32*[tex]10^{6}[/tex]
What is scientific notations?When a number between 1 and 10 is multiplied by a power of 10, it is written in scientific notation. 650,000,000, for example, can be expressed as 6.5 108 in scientific notation. Sal Khan and the CK-12 Foundation collaborated on this project.
How to solve?Given 4,320,000 which can be broken in 432*10000
Which can be written as 432*[tex]10^{4}[/tex]
432 can be written as 4.32*100*[tex]10^{4}[/tex]=4.32*[tex]10^{6}[/tex]
Hence number using scientific notation is 4.32*[tex]10^{6}[/tex]
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2. The National Safety Council routinely analyzes the benefit of seat belt use on driver safety. Their data showed that among 2823 drivers not wearing seat belts, 31 died as a result of injuries, and among 7765 drivers wearing seat belts 16 were killed. Test the hypothesis (at 95% confidence) that there is no difference in the proportion of deaths between the 2 groups. What do you conclude? Calculate the margin of error (E) at 95%.
Answer:
We conclude that there is difference in the proportion of deaths between the 2 groups.
Step-by-step explanation:
We are given that among 2823 drivers not wearing seat belts, 31 died as a result of injuries, and among 7765 drivers wearing seat belts 16 were killed.
Let [tex]p_1[/tex] = proportion of deaths when drivers were not wearing seat belts.
[tex]p_2[/tex] = proportion of deaths when drivers were wearing seat belts.
So, Null Hypothesis, [tex]H_0[/tex] : [tex]p_1=p_2[/tex] {means that there is no difference in the proportion of deaths between the 2 groups}
Alternate Hypothesis, [tex]H_A[/tex] : [tex]p_1\neq p_2[/tex] {means that there is difference in the proportion of deaths between the 2 groups}
The test statistics that would be used here Two-sample z test for proportions;
T.S. = [tex]\frac{(\hat p_1-\hat p_2)-(p_1-p_2)}{\sqrt{\frac{\hat p_1(1-\hat p_1)}{n_1}+\frac{\hat p_2(1-\hat p_2)}{n_2} } }[/tex] ~ N(0,1)
where, [tex]\hat p_1[/tex] = sample proportion of deaths when drivers were not wearing seat belts = [tex]\frac{31}{2823}[/tex] = 0.011
[tex]\hat p_2[/tex] = sample proportion of deaths when drivers were wearing seat belts = [tex]\frac{16}{7765}[/tex] = 0.002
[tex]n_1[/tex] = sample of drivers not wearing seat belts = 2823
[tex]n_2[/tex] = sample of drivers wearing seat belts = 7765
So, the test statistics = [tex]\frac{(0.011-0.002)-(0)}{\sqrt{\frac{0.011(1-0.011)}{2823}+\frac{0.002(1-0.002)}{7765} } }[/tex]
= 4.438
The value of z test statistics is 4.438.
Now, at 5% significance level the z table gives critical values of -1.96 and 1.96 for two-tailed test.
Since our test statistic doesn't lie within the range of critical values of z, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.
Therefore, we conclude that there is difference in the proportion of deaths between the 2 groups.
Also, Margin of error (E) = [tex]1.96 \times \sqrt{\frac{\hat p_1(1-\hat p_1)}{n_1}+\frac{\hat p_2(1-\hat p_2)}{n_2} }[/tex]
= [tex]1.96 \times \sqrt{\frac{0.011(1-0.011)}{2823}+\frac{0.002(1-0.002)}{7765} }[/tex]
= 0.00397
What is the area of the triangle?
A triangle with a base of 30 centimeters, height of 18 centimeters, and side length of 24 centimeters.
Answer:
270cm^2
Step-by-step explanation:
The side length is irrelevant and does not matter.
The area of a triangle is found by multiplying the base by the height and then dividing that by two.
For this problem it would be...
30*18=540
540/2=270
So the area would be 270cm^2
Answer:
270
Step-by-step explanation:
Factor completely: x^2 - 5x - 6
Answer:
x×x-5x-6
x × -4X - 6
Step-by-step explanation:
x×x-5x-6
x × -4X - 6
Please help with this magic square
Answer:
-0.06 left-middle
0.28 right-middle
0.03 right-top
0.1 middle-top
0.12 middle-bottom
Step-by-step explanation:
column-row
A car is running at a velocity of 50 miles per hour and the driver accelerates the car by 10 miles/hr2. How far the car travels from this point in the next 2 hours, if the acceleration is constant.pls answer quick using algebraic identity.fastest will mark brainliest
Answer:
s=50*2+1/2*10*2^2=100+20=120 miles
The car travels 120 miles from this point in the next 2 hours, if the acceleration is constant.
What are equations of motion?There are three equation of motions that can be used when motion of the object is under constant acceleration and on a straight path.
They are listed below as:
[tex]v = u + at\\\\s = ut + \dfrac{1}{2} at^2\\\\v^2 = u^2 + 2as[/tex]
where, the symbols have following meanings:
u = initial velocity of the considered object
v = final velocity of the object
a = acceleration of the object
s = distance traveled by the object in 't' time.
Given; A car is running at a velocity of 50 miles per hour and the driver accelerates the car by 10 miles/hr2.
We are asked that how far the car travels from this point in the next 2 hours, if the acceleration is constant.
s = 50*2 + 1/2*10*2^2
s = 100+20
s = 120 miles
Therefore, the car travels 120 miles from this point in the next 2 hours, if the acceleration is constant.
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Sam buys 4 boxes of the Crispy Crunch Cereal at Store A. What
fraction of the original price of each box of cereal does he pay per
box? Enter your answer and explanation in the box.
B 1 u
X, Ω
Store Discounts
Sam shops at three stores and each store is having its own
sale as described below.
Store A Crispy Crunch Cereal: Buy 3 boxes, get 4th free!
Store B: Take off the original price of one item!
Store C: Mystery Discount! Percent off your total purchase will
be revealed at the register!
Answer: 3/4 of the original price.
Step-by-step explanation:
Ok, so Sam buys 4 boxes in Store A.
We know that in Store A you can get 4 boxes paying only for 3.
If P is the price of a Box, then he got 4 boxes and paid 3*P
then the amount that he paid for each box is equal to the total amount that he paid divided the number of boxes that he received.
this is: 3P/4 = (3/4)*P
Meaning that he paid 3/4 of the original price for each box.
Look at this triangle.
B
8 cm
A
22 cm
С
Work out length AB.
Answer:
23,41 cm (if it's a square triangle)
Step-by-step explanation:
a²+b² = c²
22²+8² = c²
√548 = √c²
23,41 = c
A club consisting of 6 juniors and 8 seniors is to be formed from a group of 13 juniors and 16 seniors. How many different clubs can be formed from the group?
Answer: 22,084,920 different clubs
Step-by-step explanation:
The club must have 6 juniors and 8 seniors
We have a total of 13 juniors and 16 seniors.
Now, we know that the possible combinations of N objects into a group of K is equal to:
[tex]C = \frac{N!}{(N-K)!*K!}[/tex]
For the juniors we have N = 13 and K = 6
[tex]Cj = \frac{13!}{7!*6!} = \frac{13*12*11*10*9*8}{6*5*4*3*2*1} = 1716[/tex]
For the seniors we have N = 16 and K = 8
[tex]Cs = \frac{16!}{8!8!} = \frac{16*15*14*13*12*11*10*9}{8*7*6*5*4*3*2*1} = 12870[/tex]
Now, as the group consist on both combinations togheter, the number of different clubs that can be formed are:
C = Cj*Cs = 1,716*12,870 = 22,084,920
Situation:
A hiker in Africa discovers a skull that
contains 79% of its original amount of C-
14.
N = Noe
kt
No = inital amount of C-14 (at time
t = 0)
N = amount of C-14 at time t
k = 0.0001
t = time, in years
find the age of the skull to the nearest year
Answer:
about 2357 years
Step-by-step explanation:
You want to find t such that ...
0.79 = e^(-.0001t)
Taking natural logs, we get ...
ln(0.79) = 0.0001t
ln(0.79)/-0.0001 = t = 2357 . . . years
Answer:
See image
Step-by-step explanation:
The circumference of a circle is 20 cm. What is the approximate radius of the circle?
Answer:
The solution is attached here. Hope it helps ☺️
Answer:
[tex]r = 3.18cm[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
What’s the length of the apothem in this pentagon if all sides are 10in?
Answer:
10 inches
Step-by-step explanation:
It is 10 inches as you have chosen because the length from the midpoint to a side or the apothem is the length of one side. As given, a side length is 10 inches so, the length of the apothem is 10 inches.
Hope this helps!!! PLZ MARK BRAINLIEST!!!
Answer:
[tex]5\sqrt{3} inches[/tex]
Step-by-step explanation:
Can u add this up.
My brain cant handle it.
Answer:
976
Step-by-step explanation:
triangle= 1/2(24)14 times 2
square or rectangle= 10(14), 10(25), 10 (25)
What type of number is 12/3?
Choose all the answers that apply.
A.whole number
B.integer
C.rational
D.irrational
^picture attached above
I need some help now !!! please (math)
- I need to know the Slope and y-intercept (ordered pair)?
- I also need to know the equation of the line is?
Please someone help me
Answer:
the slope is either -2/1 or -1/2
Step-by-step explanation:
hope this helped sorry i didnt know the y intercept but i think its 0
Solve x2 = 12x – 15 by completing the square. Which is the solution set of the equation?
Answer:
{6-√21, 6+√21}
Step-by-step explanation:
It usually works well to put the x-terms on one side of the equal sign. Then add the square of half the x-term coefficient.
x^2 -12x = -15 . . . . . . subtract 12x
The x-term coefficient is -12, so the square of half that is (-12/2)^2 = 36. Adding 36, we have ...
x^2 -12x +36 = -15 +36
(x -6)^2 = 21
x -6 = ±√21 . . . . . take the square root
x = 6 ±√21 . . . . . add 6
The solution set is ...
{6-√21, 6+√21}
WILL GIVE BRAINLIEST ANSWER TO WHOEVER ANSWERS FIRST AND CORRECT PLEASE EXPLAIN WHY YOU ARE CORRECT
Answer:
In a typical kite as shown in picture, it is symmetric around PQ and PQ is perpendicular with RN.
=> Two right triangles PNT and PRT are congruent.
=> angle PRT = angle PNT = 34 deg
=> angle RPT = 90 - angle PRT = 90 - 34 = 56 deg
=> Option A is correct.
Hope this helps!
:)
³d what is the anwser
Answer:
75%
Step-by-step explanation:
48 of 64 times 100
48/64 × 100
0.75 × 100
75
So 75% of the bottle of orange juice is water
Hope this helps!!
find the square root of 6.4 upto two decimal place
Answer:
2.53
Step-by-step explanation:
Plz help will give brainliest
A crystal ball has a radius of 4 inches. What is the approximate volume of the crystal ball? Use 3.14 for Pi. Round to the nearest tenth.
Recall the formula Sphere Volume = four-thirds pi r cubed.
50.2 cubic inches
67.0 cubic inches
267.9 cubic inches
2,143.6 cubic inches
Answer:
Hi there!
To find the volume of the ball, we should follow this formula:
4/3*pi*r^3
Since the radius is 4, we can just plug the value in:
4/3*3.14*4^3
= 267.946667
Round to the nearest tenth:
= 267.9
Your answer is 267.9.
Hope this helps!
Answer: c
Step-by-step explanation:
A paper company needs to ship paper to a large printing business. The paper will be
shipped in small boxes and large boxes. The volume of each small box is 6 cubic feet
and the volume of each large box is 22 cubic feet. A total of 22 boxes of paper were
shipped with a combined volume of 324 cubic feet. Write a system of equations that
could be used to determine the number of small boxes shipped and the number of
large boxes shipped. Define the variables that you use to write the system.
Answer:
Small Boxes: 10
Large boxes: 12
Step-by-step explanation:
It is known that a particular project can be completed by nine employees working eight hours a day for twenty five days. To speed completion of the project in a particular town, the supervisor is being provided with twelve workers, and is being asked to complete the project in fifteen days. How many hours a day must the employees worl each day, in order to finish on time?
In order to wipe out the whole job, it takes
(9 persons) x (8 hours/day) x (25 days) = 1,800 person-hours .
12 workers working for 15 days will accomplish
(12 persons) x (H hours/day) x (15 days) = 180H person-hours of work.
180H person-hours = 1,800 person-hours
H = 10
The 12-person team must work 10 hours/day to make this scheme all work out.
What'll really happen:
-- In order to keep tabs on the project and make sure it gets done on the accelerated schedule, the managers in Chicago in suits will assign the supervisor to complete the project in 14 days instead of 15, and they'll require him to send them a status report twice each day.
-- After completing and emailing the Noon status report each day, the supervisor will put on his hard-hat and PPE, and head out to work alongside the 12 sweating workers, who will all begin to sag when they pass 9 hours each day.
-- Day #12 will be solid torrential rain, and no progress will be possible. The men will want to get some rest, but Chicago will call a Zoom meeting to deliver a motivational pep-talk. Attendance will be mandatory.
-- Days #13 and #14 will stretch to 12 hours, but the project will finish in the allotted 14 days.
-- On Day #15, in Chicago, the customer will treat the managers to a fine dinner, drinks, and a Bulls game, in appreciation for completing the project in 15 days. In the field, the supervisor and the 12 workers will get to sleep in for a whole hour later than usual, before they clean up the job site and begin the long drive home.
(Been there. Done that.)
Solve for p. 6p-2(p+4)=12
Answer:
p=5
Step-by-step explanation:
please mark brainliest
What is 100 times 10
Answer:
Your answer will be 1,000
Step-by-step explanation:
One thousand
Hope this helps : )
Answer:
1000
Step-by-step explanation:
Add 100 10 times and you will get 1000
How many tissues should a package of tissues contain? Researchers have determined that a person uses an average of 60 tissues during a cold. Suppose a random sample of 10 comma 000 people yielded the following data on the number of tissues used during a cold: x overbar equals 53 comma s equals 23. We want to test the alternative hypothesis Upper H Subscript a: muless than60. State the correct rejection region for alpha equals 0.05 .
Answer:
Null hypothesis: [tex] \mu \geq 60[/tex]
Alternative hypothesis: [tex] \mu <60[/tex]
Since the sample size is large enough we can assume that the distribution for the statistic is normal so then in order to find the critical value for this test taking in count the significance level given of 0.05 we need to look in the normal standard distribution a value who accumulates 0.05 of the area in the left and would be:
[tex] z_{crit}= -1.64[/tex]
Step-by-step explanation:
For this case we have the following data given:
[tex] \bar X = 53[/tex] represent the sample mean
[tex] s = 23[/tex] represent the sample deviation
[tex]n = 10000[/tex] represent the sample size.
We want to test for this case if the true mean is less than 60 so then the system of hypothesis are:
Null hypothesis: [tex] \mu \geq 60[/tex]
Alternative hypothesis: [tex] \mu <60[/tex]
Since the sample size is large enough we can assume that the distribution for the statistic is normal so then in order to find the critical value for this test taking in count the significance level given of 0.05 we need to look in the normal standard distribution a value who accumulates 0.05 of the area in the left and would be:
[tex] z_{crit}= -1.64[/tex]
Help please?????????????
Answer:
1 gal 9 qt
Step-by-step explanation:
Answer:
1.75 US Gallons
Step-by-step explanation:
(3 gal 2 qt) - (1 gal 3 qt) =
1.75 US gallons
Aaron ate 1/2 of a blueberry pie and 2/3 of an apple pie how much pie did she eat
Answer:
7/6pie. i think
Step-by-step explanation:
1/2 + 2/3 = 3/6 + 4/6 = 7/6 = 1 1/6
Answer:
1 and 1/6
Step-by-step explanation:
1/2 + 2/3 = 3/6 +4/6= 1 1/6
is the origin Located at the point (1,1)
Answer:
No, the origin is Located at (0,0)
Answer:
no
Step-by-step explanation:
The origin is located at the center of a graph, at (0, 0)
Place the three functions in order from the fastest decreasing average rate of change to the slowest decreasing average rate of change on the interval [0, 3]
Answer:
g(x), f(x), h(x)
Step-by-step explanation:
The required functions sequence are -x³, -x² and -|x|.
Three functions in order from the fastest decreasing average rate of change to the slowest decreasing average rate of change on the interval [0, 3].
Rate of change is defined as the change in value with rest to the time is called rate of change.
Question seems to be incomplete, we assumed three functions -x³, -x² and -|x|.
Now, the function has fastest decreasing average rate of change is -x³
and the function has slowest decreasing average rate of change is -|x| on the interval [0, 3]. While plotting on graph.
Thus, the required functions sequence are -x³, -x² and -|x|.
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