First Question:

As an aid for improving students' study habits, nine students were randomly selected

to attend a seminar on the importance of education in life. The table shows the number

of hours each student studies per week before and after the seminar. Did the seminar

increase the number of hours the students studied per week? Assume the differences in

study hours (which you need to find) are Normally distributed. Using = .05, test the

hypothesis that the seminar increased hours of studying using the five step testing

method.

Before

9 12 6 15 3 18 10 13 7

After

9 17 9 20 2 21 15 22 6

Second Question:

A researcher believes that the proportion of male high school seniors who have their own cars is higher than the proportion of female high school seniors who have their own cars. In a sample of 35 male high school seniors 10 had their own cars.In a sample of 40 female high school seniors, 10 had their own cars.At = 0.05, test the researchers claim using the five step testing method.