According to a Gallup survey of boys 77% of boys had played computer games in the past week, compared with 65% of girls. You take and SRS of 104 boys and 120 girls. (A) Find the mean of each sampling distribution.
(B) Would it be reasonable to use the standard deviation formula? Explain.
(C) Find standard deviation of each sampling distribution.
(D) How would you describe each distribution?
(E) How would you describe the distribution of difference in percentage of boys and girls who had
played computer games in the past week?
(F) Find the mean and standard deviation of the difference in proportion of boys and girls who had
played computer games in the past week.
(G) How frequently does the proportion of girls exceed the proportion of boys?