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.

-The standard error is estimated to be 0.056. Find (in the context of this data situation) a 95% confidence interval for the difference in the proportion of smokers between male and female students, Round the margin of error to three decimal places.
A) -0.062 to 0.162
B) -0.006 to 0.106
C) -0.118 to 0.218
D) 0.475 to 0.525

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.
 
-The standard error is estimated to be 0.056. Find (in the context of this data situation) a 95% confidence interval for the difference in the proportion of smokers between male and female students,  Round the margin of error to three decimal places.
A) -0.062 to 0.162 
B) -0.006 to 0.106 
C) -0.118 to 0.218 
D) 0.475 to 0.525

Quizplus · Accepted Answer

0.05 ± 2*0.056 ? 0.05 ± 0.112 ? -0.062 to 0.162
We are 95% sure that the difference in the proportion of smokers between male and female students is between -0.062 and 0.162.

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