21. Winter Driving A USA Today snapshot shows that men and women feel differently about driving in winter conditions, as shown in the following graphic.22 Suppose that the survey involved random samples of 491 men and 398 women who drive in snow.

a. Construct a 90% confidence interval for the proportion of men and women who feel very comfortable driving in winter conditions.

b. Construct a 99% confidence interval for the proportion of men and women who feel kind of comfortable driving in winter conditions.

c. Based on the confidence intervals in parts a and

b, can you conclude that there is a difference in the proportion of men and women who feel very comfortable driving in winter conditions? Who feel kind of comfortable?

Transcribed Image Text:

MEN WOMEN Very comfortable 44% 23% Kind of comfortable 44% Not too comfortable 10% 25% Not comfortable at all 2% 11% 41% Getting a grip on winter driving Men vs. women on how comfortable they are driving in winter conditions