Use the following to answer the questions below:
Suppose we are interested in comparing the proportion of male students who smoke to the proportion of female students who smoke. We have a random sample of 150 students (60 males and 90 females) that includes two variables: Smoke = "yes" or "no" and Gender = "female (F)" or "male (M)." The two-way table below summarizes the results.
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-You wish to provide a 98% confidence interval for the difference in the proportion of smokers between male and female students. State which percentiles of your bootstrap distribution you would use.
A) Use the 1%- and 99%-tiles
B) Use the 2%- and 98%-tiles
C) Use the 4%- and 96%-tiles
D) Use the 5%- and 95%-tiles

Question

Use the following to answer the questions below:
Suppose we are interested in comparing the proportion of male students who smoke to the proportion of female students who smoke. We have a random sample of 150 students (60 males and 90 females) that includes two variables: Smoke = "yes" or "no" and Gender = "female (F)" or "male (M)." The two-way table below summarizes the results.
‪ 
-You wish to provide a 98% confidence interval for the difference in the proportion of smokers between male and female students. State which percentiles of your bootstrap distribution you would use.
A) Use the 1%- and 99%-tiles 
B) Use the 2%- and 98%-tiles 
C) Use the 4%- and 96%-tiles 
D) Use the 5%- and 95%-tiles

Quizplus · Accepted Answer

Using the 1% -and 99%-tiles, a 98% confidence interval for the difference in proportions is -0.078 to 0.189 (based on 5,000 bootstrap samples).

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