Answer:
a) The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance
Null hypothesis is accepted at 0.01% level of significance
They score is above 24 on the math portion of the exam
b)
Null Hypothesis: There is no significance difference between the college level mathematics and math courses in high school
H₀: μ = 24
Alternative Hypothesis: H₁: μ ≠ 24
Step-by-step explanation:
Step(i):-
Given random sample 'n' = 250
Given data sample mean x⁻ = 24.5
Standard deviation = 3.3
Null Hypothesis: There is no significance difference between the college level mathematics and math courses in high school
H₀: μ = 24
Alternative Hypothesis: H₁: μ ≠ 24
test statistic
[tex]Z = \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }[/tex]
[tex]Z = \frac{24.5 - 24}{\frac{3.3}{\sqrt{250} } } = \frac{0.5}{0.2087} = 2.397[/tex]
a) 99% or 0.01% level of significance
Level of significance ∝ = 0.01
[tex]Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.005} =2.576[/tex]
The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance
Null hypothesis is accepted at 0.01% level of significance
They score is above 24 on the math portion of the exam
b) 95% or 0.05% level of significance
Level of significance ∝ = 0.05
[tex]Z_{\frac{\alpha }{2} } = Z_{\frac{0.05}{2} } = Z_{0.025} = 1.96[/tex]
The Z -value 2.397 > 1.96 at 95% or 0.05% level of significance
Null hypothesis is Rejected at 0.05% level of significance
They score is below 24 on the math portion of the exam
Find the value of x.
Answer:
x = 61
Step-by-step explanation:
x and 29 are complementary angles so they add to 90 degrees
x+29 = 90
Subtract 29 from each side
x+29-29 = 90-29
x = 61
Answer:
61 degrees = x
Step-by-step explanation:
Since angle measures x and 29 are complementary angles, subtract 29 from 90 degrees.
90 - 29 = 61 degrees is the value of x
Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification: freshmen 83, sophomores 68, juniors 85, and seniors 64. The school superintendent is interested in determine whether there has been a significant change in the classification between last school year and this school year.
Deteremine the correct null hypothesis for this problem
Find the given attachment
PLEASE HELP me with the magic square
Fill in each slot in the square with variables a, b, c, d, and e, in order from left-to-right, top-to-bottom. In a magic square, the sums across rows, columns, and diagonals all add up to the same number called the magic sum.
The magic sum is -3.9, since "diagonal 2" (bottom left to top right) has all the information we need:
3 + (-1.3) + (-5.6) = -3.9
Use this to find the remaining elements
row 1:a + b + (-5.6) = -3.9
row 2:c + (-1.3) + d = -3.9
row 3:3 + e + 0.02 = -3.9
column 1:a + c + 3 = -3.9
column 2:b + (-1.3) + e = -3.9
column 3:(-5.6) + d + 0.02 = -3.9
diagonal 1 (top left to bottom right):a + (-1.3) + 0.02 = -3.9
You will find
a = -2.62
b = 4.32
c = -4.28
d = 1.68
e = -6.92
BRAINLIEST this is a really hard question and i just cant figure it out, can someone please help me
What is 0 + 0 - 0 / 0 = 0 + 0 / 0
i cant figure it out lol
Answer:
so first, 0 can't be divisible
but whatever,
0 + 0=0
0-0=0
0/0=0 = 0+0=0/0=0
so the answer will stay the same, which is 0.
lol, hope that helps, dude/dudess.
Answer:
0
Step-by-step explanation:
because
0+0=0
0-0=0
0÷0=0
0×0=0
Add. Enter your answer in scientific notation.
2.25 x
108 +3.50 x 108 +2.25 x 108 =
Answer:
8×10⁸
Step-by-step explanation:
2.25×10⁸ +3.50×10⁸ +2.25×10⁸ = (2.25 +3.50 +2.25)×10⁸ = 8×10⁸
__
Your calculator can do this for you and display the result in scientific notation.
If you make $ 18,720 a year what is your monthly wage ?
Answer:
1,560.00 per month
Answer:
1,560
18,720/12 months in a year = 1,560 per month
hope this helps
Step-by-step explanation:
write an algebraic expression for 2 less than twice a n
Answer:
(2(an))-2
Step-by-step explanation:
What is the y-value when x equals - 12?
y = -200 - 6(x)
Enter the correct answer
Answer:
y = -6x - 200
Step-by-step explanation:
5lb 7oz -11oz need help quick
Answer:
76 ounces
Step-by-step explanation:
I'm assuming you meant:
5lb+7oz-11oz=
16 ounces in a pound
5lb+7oz-11oz=
80+7-11=
87-11=
76 ounces
A cylindrical tank is half-full of oil. The cylinder has base radius of 100cm.The height of the cylinder is 250cm. 1 litre =1000cm cubed
How many litres of oil are in the tank? Round your answer to the nearest litre.
Answer:
Step-by-step explanation:
area of a cylinder=. V=πx r^2xh
so...
πx100^2x125=3926990.817 (the height is 125 because only half of it has oil)
3926990.817/1000=3927litres
What does X equal?? Please help me out!!
ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.
Answer:
x > 5
Step-by-step explanation:
Subtract 7 from both sides, like so:
x + 7 > 12
- 7 - 7
________
x > 5
Jamie spent $12 dollars a day on food for 6 days. What was Jamie’s overall change in her bank account for food over the 6days?
Answer:
-72
Step-by-step explanation:
12 * 6 = 72
Jaime spent 72 dollars for the 12 days
It went down because the money was spent
-72
The mean temperature for the first 7 days in January was 4 °C.
The temperature on the 8th day was 4 °C.
What is the mean temperature for the first 8 days in January?
Answer:
4 degrees Celsius
Step-by-step explanation:
Since the mean is (total/amount), we can remake this to get That mean*amount=total. For the first 7 days, 4*7=28 for our total, and add that to the 8th day to get 32 for our total. 32/8=4 for our mean for the first 8 days of january
Answer:
Answer:
4 degrees Celsius
Step-by-step explanation:
Since the mean is (total/amount), we can remake this to get That mean*amount=total. For the first 7 days, 4*7=28 for our total, and add that to the 8th day to get 32 for our total. 32/8=4 for our mean for the first 8 days of january
Sherri hikes on the Pacific Coast trail. She plans to hike 3.72 miles. If she hikes at an average speed of 1.2 miles per hour, how long will she hike?
Answer:
3.1 hours
Step-by-step explanation:
Average Speed=Distance Traveled ÷ Time Taken
Sherri plans to hike 3.72 miles at an average speed of 1.2 miles per hour.
Average Speed=1.2 miles per hour.Distance =3.72 milesTherefore:
1.2 miles per hour=3.72 miles ÷ Time
1.2 miles per hour X Time=3.72 miles
Time = 3.72 ÷ 1.2 hours
Time taken by Sherri=3.1 hours
Sherri will hike for 3.1 hours.
A student used f(x) = 5.00(1.012)* to show how the balance in a savings account will
increase over time. What does the 5.00 represent?
Answer:
the initial balance
Step-by-step explanation:
5.00 is the value of f(0). It is the balance before any time has elapsed, the initial balance.
If you were to roll a six-sided number cube 60 times, about how many times would you expect the number cube to land on a 1?
Answer:
10
Step-by-step explanation:
Probability is the likeliness of happening of an event.
Probability of any event A can be be defined by
no. of time event A happens/ total no. all possible event that can occur
___________________________________
In the problem
probability of occurrence of 1 on rolling a cube is needed.
A cube has six sides with one written on one sides and rest has 2,3,4,5,6.
No of times 1 can occur on rolling the dice once will be = 1
Since there six sides and and each has different number (1,2,3,4,5,6)
There is chance that each of the number can come.
Thus, total no possible outcome = 6
Probability of occurrence of 1 = No of times 1 occurs on rolling the dice /total no possible outcome = 1/6
_____________________________________________
If dice is rolled 1 time there is 1/6 chance that 1 will be the outcome.
If dice is rolled 1*60 time then there is 1/6*60= 10 chance that 1 will be the outcome
Thus , If you were to roll a six-sided number cube 60 times, about 10 times it is expected that the number cube to land on a 1.
Answer:
20
Step-by-step explanation:
find the slope of the line passing through the points (6,9) and (6, -1)
Answer:
Undefined
Step-by-step explanation:
M=undefined
Slope = y2-y1 /x2- x1
=9 -(-1). / 6-6
= 10/0 = infinity ; undefined
nora spend 1/4 of her pocket money on choclate ,1/8 pizz at end she had 40 dollar left how much did she have at the begging
Answer:
$64
Step-by-step explanation:
1/4 + 1/8=3/8
8/8-3/8=5/8
8/8 x 40 x8/5
=$64
Answer:
64
Step-by-step explanation:
1/4 = 2/8
2/8 + 1/8 = 3/8
5/8 = 40
div by 5 = 8
1/8 = 8
she had 64 dollars to start with
what is the number that has the same value as l6l
Answer:6
Step-by-step explanation: Moving two bars to the edge of 6 will result in 6.
How to solve #2 if you don’t know any of the side lengths?? (We’re learning about Pythagorean Theorem)
Answer:
Applying Pythagorean theorem in right triangle with c is longest side and a, b are the other sides:
=> c^2 = a^2 + b^2
=> a^2 = c^2 - b^2
=> b^2 = c^2 - a^2
Hope this helps!
:)
Answer:
c² = a² + b²
a² = c² - b²
b² = c² - a²
a cartographer used a scale of 1 inch :300 meters for the heights of different mountains if the actual height of one of those mountains is 3700 meters high. what is the height on the map?
Answer:
[tex]12\frac{1}{3}[/tex] inches
Step-by-step explanation:
So to go from 300 to 3700 you have to multiply by [tex]12\frac{1}{3}[/tex]
b. David and Andrew are traveling to a Mathematics conference. David travels 110 miles in the same time that Andrew travels 140 miles. Andrew travels 15 miles per hour faster than David. Find the average rate of each person.
Answer:
Its 14 and 19
Step-by-step explanation:
Answer:
b. About 15 miles
Step-by-step explanation:
got it right on edge
The table below represents the equation: y = 1.5x – 2 A 2-column table with 4 rows. Column 1 is labeled x with entries negative 3, 0, 3, 6. Column 2 is labeled y with entries negative 6.5, negative 2, blank, blank. Y = 1.5 (negative 3) minus 2. y = 1.5 (0) minus 2. If you completed this table, would each input have exactly one output?
Answer:
yes, each input would have exactly one output if you completed this table.
Step-by-step explanation:
Yes, there is only one output for each input. The table's linear equation provides exactly one value of y for each value of x.
What is the equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.
What are Arithmetic operations?Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions.
The operator that performs the arithmetic operation is called the arithmetic operator.
What is the linear equation?The general equation of a line is y = mx + c
where m is the slope of the line and c is the intercept.
A linear equation is defined as an equation in which the highest power of the variable is always one.
The table's linear equation provides exactly one value of y for each value of x.
Yes, there is only one output for each input.
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What is the median of the following numbers?
8,10,8,5,4,7,5,10,8
Answer:
the answer is 4
Step-by-step explanation:
Answer:
the median is 7
Step-by-step explanation:
to find the median you need to find the highest number in value and then find the lowest number in value. The median is the middle value.
The amplitude of y= – sin is
b 0
C2
d 1
Answer:
d. 1
Step-by-step explanation:
The amplitude of such a function is the magnitude of the coefficient of the sine function.
|-1| = 1 . . . . the amplitude . . . matches choice D
Rearrange the equation so q is the independent variable.
9q-4=3r-6
r = __
Answer:r=3q+2/3
Step-by-step explanation:
Step 1: Flip the equation.
3r-6=9q-4
Step 2: Add 6 to both sides.
3r-6+6=9q-4+6
3r=9q+2
Step 3: Divide both sides by 3.
3r/3=9q+2/3
r=3q+2/3
Hopefully it’s right
Rearranging the equation, so q is the independent variable as r=(9q+2)/3.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
The given equation is 9q-4=3r-6.
Now, 9q-4+6=3r
3r=9q+2
r=(9q+2)/3
Therefore, rearranging the equation, so q is the independent variable as r=(9q+2)/3.
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Batman, who is having a slow year for crime, has resorted to saving cats from very tall buildings. Our fearless 6 foot tall hero is 40 feet from the the Petsmart building the cat was trying to break in to, in order to get his paws on the pumpkin spice cat nip. Batman sights the top of the building at a 30° angle, how high is the building?
Answer:
29.094 feet tall
Step-by-step explanation:
tan(30) = [tex]\frac{x}{40}[/tex]
so tan is opposite over adjacent which means that we should be able to solve for the opposite as we have the angle (30) and the distance from Batman to to building, which is (40 feet), with these numbers you will do, tan(30) = [tex]\frac{x}{40}[/tex] and from that you will solve for x, and from x you add the 6 foot of batmans height
What is the volume, in cubic cm, of a rectangular prism with a height of 19cm, a
width of 16cm, and a length of 8cm?
Answer: 2432
19 x 16 x 8 = 2432
Answer: 2,432 cm³
Step-by-step explanation: To find the volume of a rectangular prism or a prism whose base is a rectangle, we use the formula below.
Volume = length × width × height
Since the rectangular prism has a length of 8 centimeters, a width of 16 centimeters, and a height of 19 centimeters,
we can plug this information into the formula to get
(8 cm)(16 cm)(19 cm).
This gives us 2,432 cm³.
So the volume is 2,432 cm³.
Which statement is true? Question 10 options: A) |13| = – 13 B) – |13| = 13 C) |–13| = 13 D) – |–13| = 13
Answer:
The answer is C
Step-by-step explanation:
Every negative or positive number in the modulus while be positive at the end
The true statement is C) |–13| = 13, indicating that the absolute value of -13 is 13, representing the distance of -13 from zero on the number line.
How to Solve Absolute Value Equations?The true statement is: C) |–13| = 13, as explained below.
The expression |–13| represents the absolute value of -13, which is the distance of -13 from zero on the number line, always resulting in a non-negative value.
|–13| = 13, because the absolute value of -13 is 13, meaning it is 13 units away from zero on the number line. So, the correct option is C) |–13| = 13.
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