Identify the critical t. An independent random sample is selected from an approximately normal population with unknown standard deviation. Find the degrees of freedom and the critical t value t∗t∗ for the given sample size and confidence level. Round critical t values to 3 decimal places.Sample size, n Confidence level Degree of Freedom Critical value, t∗t∗5 90 13 95 22 98 15 99

Answer and Step-by-step explanation: The critical value for a desired confidence level is the distance where you must go above and below the center of distribution to obtain an area of the desired level.

Each sample has a different degree of freedom and critical value.

To determine critical value:

1) Calculate degree of freedom: df = n - 1

2) Subtract the level per 100%;

3) Divide the result by 2 tails;

4) Use calculator or table to find the critical value t*;

For n = 5 Level = 90%:

df = 4

t = [tex]\frac{1-0.9}{2}[/tex] = 0.05

Using t-table:

t* = 2.132

n = 13 Level = 95%:

df = 12

t = [tex]\frac{1-0.95}{2}[/tex] = 0.025

Then:

t* = 2.160

n = 22 Level = 98%

df = 21

t = [tex]\frac{1-0.98}{2}[/tex] = 0.01

t* = 2.819

n = 15 Level = 99%

df = 14

t = [tex]\frac{1-0.99}{2}[/tex] = 0.005

t* = 2.977

The critical values and degree of freedom are:

sample size          level           df              critical value

     5                      90%           4                   2.132

   13                       95%            12                 2.160

   22                      98%            21                 2.819

   15                       99%            14                 2.977

WHOEVER DOES ALL OF THIS GETS BRAINLYEST AND 5 STARS PLS HELP!!!!!!!!!!!!!!
What is the estimated sum of 8/19 + 6/13?
A. 1/2
B. 1
C. 1 1/2
D. 2
Estimate. 20 9/11 divided by 6 19/20

A. 147
B. 120
C. 4
D. 3
Which of the following is the best estimate of 8 1/8?
A. 7 1/2
B. 8
C. 8 1/2
D. 9

Armenia is baking 24 batches of brownies for the bake sale. Each batch of brownies takes 2 4/5 cups of flour. What is a reasonable estimate of the amount of flour that she will need to bake all twenty-four batches of brownies?
A. 96
B. 72
C. 60
D. 48
What is the estimated difference of 4 9/10 - 1 1/12?
A. 4
B. 3 1/2
C. 3
D. 2 1/2

Which of the following is the most reasonable product of 6 15/17 and 8 21/22
A. 63
B. 56
C. 54
D. 48
What is the estimated sum of ?
A. 7
B. 7 1/2
C. 8
D. 9
What is the estimated sum of 6/7 + 4/7
A. 1/2
B. 1
C. 1 1/2
D. 2

Which of the following is the best estimate of 7/8
A. 0
B. 1/2
C. 1
D. 1 1/2

Which of the following is the best estimate of 24 9/20
A. 23 1/2
B. 24
C. 24 1/2
D. 25

The proportion of observations from a standard Normal distribution that take values larger than -0.75 is about A) 0.2266 B) 0.7704 C) 0.7734 D) 0.7764 E) 0.8023

A rectangular pool has a length of 200 ft. You're building a model. Using a scale
factor of 1725, what is the scale length of your model? *

Please help & thank you.

For which value of p will the equation 6x – 5 = 6x + p have an infinite number of solutions?
A. 5
B. 0
C. -10
D. -5

-3a - 4(a - 6) = 24 - 7a

Solve the equation

Thanks

what is 3 divided by 57.6

12(x-6)and 14(x+14).

plz help

Examine circle O, where chords AB¯¯¯¯¯¯¯¯ and CD¯¯¯¯¯¯¯¯ are congruent.

Point P lies on AB and point Q lies on CD.
Angles APO and DQO are right angles.

The diagram as described in the problem.

Which congruence statement is true?

A.) QD≅QO
B.) OP≅AB
C.) CD≅AP
D.) OP≅OQ

If x is the principal square root of 7, what must be true.

A. x = 7², and x is negative

B. x² = 7, and x is positive

C. x = 7², and x is positive

D. x² = 7, and x is negative ​

What is the value of 15/2+I?

Divide. Express your answer in simplest form. ○14 ○ 49 ○98 ○28​

41 divide by 278.8 hi my name chavoria

Determine the sample size required to estimate a population mean to within 10 units given that the population standard deviation is 60. A confidence level of 90% is judged to be appropriate.

Solve the following expression: (9 x 10) - (30 + 30). Show all steps taken.

Explain to me in words how you would find the slope of this line and explain answer

Please answer i wanna get this over with h ^-2 / h ^4

X - 2
x2-2x + 3
4.
x + 3
x + 3​

What is the inequality of y-2x<=-3

Sleep habits of New Yorkers. New York is known as the city that never sleeps". A random sample of 25 New Yorkers were asked how much sleep they get per night. Statistical summaries of these data are shown below. The point estimate suggests New Yorkers sleep less than 8 hours a night on average. Is the result statistically signicant? n x s min max25 7.73 0.77 6.17 9.78(a) Write the hypotheses in symbols and in words.(b) Check conditions, then calculate the test statistic, T, and the associated degrees of freedom.(c) Find and interpret the p-value in this context. Drawing a picture may be helpful.(d) What is the conclusion of the hypothesis test?(e) If you were to construct a 90% condence interval that corresponded to this hypothesis test, would you expect 8 hours to be in the interval?

Which numbers should go in the shaded overlap?
Factors of 30
Factors of 20

evaluate the expression for x = 3 y= 1/3 and z= 5. 12 x - 3y / 4 x - Z​

Find the missing measure and write your solution on the blank provided

(39×5) to siplifiy please help

Manny must choose between a pack of four 6.5-ounce containers of yogurt for $3.61 or three 8-ounce containers at $1.27 each. Which is the better buy? Complete the explanation. If necessary, round to the nearest cent.

I WILL GIVE BRAINLIEST ONLY IF YOU ANSWER WELL
Which expression uses the commutative property to make it easier to evaluate 3/5·1/4·25
A.25·4·3/5
B.5/3·25·1/4
C.3\5·25·1\4
D.3/5·1/25·1/4​

Liam solved the equation 72=8⋅b. His work is shown. What error did Liam make?

Guided Practice
CPCTC
Given
KGK
H is the midpoint of GK
Prove:
Side FG - Side JK
Statement
Reason
es

PLEASE HELP!!!!!
What is the result when the number 59 is decreased by 7%?

5(x+2) - 3 = 2x + 7 + 3x *
One Solution
No Solution
Infinitely Many Solutions

5x + 27x - 10 = 8(4x +10)
One Solution
No Solution
Infinitely Many Solutions