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Questions 1 through 4 refer to the following:

According to the US Department of Health and Human Services, the percentage of adults who smoked cigarettes in 2011 was 19%. A survey of 500 adults taken in 2012 found 85 who smoke. The researcher is interested in finding evidence at the .05 significance level of a decrease from 2011 to 2012 in the proportion of US adults who smoke.

Which of the following pairs of hypotheses is suggested by the scenario described above?

Selected Answer: E.

H0: p ≥ 0.19 HA: p < 0.19

Correct Answer: B.

H0: p ≥ 0.19 HA: p < 0.19

Question 2

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What is the value of the test statistic? Selected Answer: C.

-1.140

Correct Answer: C.

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0.5

Correct Answer: C.

0.5

Question 21

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What is the correct decision for 9.19? Selected Answer: A.

Reject H0

Correct Answer: A.

Reject H0

Question 22

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What is the value of the test statistic for 9.47? Selected Answer: B.

2.75

Correct Answer: D.

2.75

Question 23

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Which of the following is(are) the correct critical value(s) for 9.33? Selected Answer: d.

1.753

Correct Answer: d.

1.753

Question 24

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Which of the following correctly characterizes the p-value for 9.49? Selected Answer: A. p-value < .01

Correct Answer: A. p-value < .01

Question 25

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What is the value of the test statistic for 9.45? Selected Answer: D.

2.777

Correct Answer: D.

2.777

Question 26

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What is(are) the correct critival value(s) for 9.59? Selected Answer: D.

-1.65

Correct Answer: C.

-1.65

Question 27

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Which of the following correctly characterizes the p-value for 11.27? Selected Answer: D. p-value > .10

Correct Answer: D. p-value > .10

Question 28

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What is the value of the test statistic for 11.11? Selected Answer: D.

10.841

Correct Answer: D.

10.841

Question 29

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Which of