Question 8: 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 = "ves" or "no" and Gender = "female (F)" or "male (M)." The two-way table below summarizes the results. Smoke = Yes Smoke = No Sample Size 60 Gender = M Gender = F 9. 51 9. 81 90 where pm and Pf a. If the parameter of interest is the difference in proportions, pm- pf, represent the proportion of smokers in each gender, find the difference in proportions based on the data in the table. Report your answer with two decimal places.

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