Free Printable AP Stats Chapter 20

Worksheets

AP Stats Chapter 20 - Hypothesis Testing

Total questions: 16

Worksheet time: 48mins

Name

Class

Date

A P-value indicates:

the probability that the null hypothesis is true

the probability that the alternative hypothesis is true

the probability of obtaining the results (or one more extreme) if the null hypothesis is true

probability of a Type I error

In testing hypotheses, which of the following would be strong evidence against the null hypothesis?

using a small level of significance

using a large level of significance

obtaining data with a small p-value

obtaining data with a low test statistic

Which of the following shows a right-tailed test?

Ha: p < .15

H₀: p < .15

Ha: p > .15

H₀: p > .15

Which of the following shows a left-tailed test?

Ha: p < .15

H₀: p < .15

Ha: p > .15

H₀: p > .15

When p-value is greater than alpha we:

Reject Ho

Fail to reject Ha

Fail to reject Ho

Reject Ha

When p-value is less than alpha we:

Reject Ho

Fail to reject Ha

Fail to reject Ho

Reject Ha

What is the only option for the null hypothesis?

H₀ = k

H₀ > k

H₀ < k

H₀ ≠ k

Which of the following is not an option for an alternative hypothesis?

H_a = k

H_a > k

H_a < k

H_a ≠ k

Suppose the P-value for a hypothesis test is 0.0304. Using α = 0.05, what is the appropriate conclusion?

Reject the null hypothesis

Reject the alternative hypothesis

Fail to reject the null hypothesis

Fail to reject the alternative hypothesis

10.

Suppose the P-value for a hypothesis test is 0.0304. Using α = 0.01, what is the appropriate conclusion?

Reject the null hypothesis

Reject the alternative hypothesis

Fail to reject the null hypothesis

Fail to reject the alternative hypothesis

11.

In a research report, the term "significant" is used when the null hypothesis is rejected.

True

False

12.

Which of the following is the FIRST step of a hypothesis test?

Check assumptions & conditions

Find your test statistic

State your conclusion

State your null & alternative hypotheses

13.

When performing a test about the population proportion, what distribution would you need to use?

chi-square

14.

Identify the correct null hypothesis:

Is the proportion of babies born male different from 50%? In a sample of 200 babies, 96 were male. Test the claim using a level of significance of 1%.

H₀: p = 0.50

H₀: µ = 100

H₀: p = 0.48

H₀: µ = 96

15.

A mayor is concerned about the percentage of city residents who express disapproval of his job performance. His political committee pays for a newspaper ad, hoping to keep his disapproval rating below 21%. They will use a follow up poll to access effectiveness. What are the correct null and alternative hypotheses?

Ho: μ > 21

Ha: μ < 21

Ho: p > .20

Ha: p < .20

Ho: p < .21

Ha: p > .21

Ho: p > .21

Ha: p < .21

16.

5% of trucks of a certain model have needed new engines after being driven between 0 and 100 miles. The manufacturer hopes that the redesign of one of the engine's components has solved this problem. Write the null and alternative hypotheses for this situation.

Ho: p< 0.05
Ha: p = 0.05

Ho: p = 0.05
Ha: p > 0.05

Ho: p = 0.05
Ha: p < 0.05

Ho: p > 0.05
Ha: p = 0.05

100 %

AP Stats Chapter 20 - Hypothesis Testing

Total questions: 16

Worksheet time: 48mins

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