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CW - 7.3

Authored by Darin Smyth

Mathematics

11th - 12th Grade

CCSS covered

Used 17+ times

CW - 7.3
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12 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the critical value and rejection region for the type of t-test with level of significance α and sample size n.

Left-tailed test, α = 0.1, n = 25

1.318

-1.318

1.316

-1.316

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the critical value and rejection region for the type of t-test with level of significance α and sample size n.

Right-tailed test, α = 0.05, n = 40

1.645

-1.645

1.960

-1.960

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the critical value and rejection region for the type of t-test with level of significance α and sample size n.
Two-tailed test, α = 0.02, n = 21 

 2.5282.528  

 ±2.528\pm2.528  

 2.528-2.528  

 ±2.326\pm2.326  

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the standardized test statistic t for a sample with n = 12, x = 31.2, s = 2.2, and α = 0.01 if Ho: μ = 30. Round your answer to two decimal places.

2.132.13

1.991.99

1.891.89

2.012.01

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the standardized test statistic t for a sample with n = 15, x = 16.25, s = 2.3, and α = 0.05 if Ho: μ ≥ 17.8. Round your answer to two decimal places. 

 2.13-2.13 

 2.18-2.18 

 2.87-2.87 

 2.61-2.61 

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed.


Claim μ = 25; α = 0.01. Sample statistics: x = 25.2, s = 2.6, n = 18

Reject Ho, at 1% level of significance, there is enough evidence to reject the claim.

Fail to reject Ho, at 1% level of significance, there is not enough evidence to support the claim.

Fail to reject Ho, at 1% level of significance, there is not enough evidence to reject the claim.

Reject Ho, at 1% level of significance, there is enough evidence to support the claim.

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed.

Claim μ > 33; α = 0.10.

Sample statistics: x = 34, s = 3, n = 25

Fail to reject Ho, at 10% level of significance, there is not enough evidence to support the claim.

Reject Ho, at 10% level of significance, there is enough evidence to reject the claim.

Fail to reject Ho, at 10% level of significance, there is not enough evidence to reject the claim.

Reject Ho, at 10% level of significance, there is enough evidence to support the claim.

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