Do males and females differ in the amount of time they talk on the phone? A study reported that women spent a mean of 818 minutes per month talking on the phone. Men spent 716 minutes per month on the phone (USA Today 2011). The samples were 100 for women and men. The standard deviation for women was 125 per month and 100 per month for men.

1. Use the most appropriate t-test to find out if there is difference in means for the amount of time spent talking on the phone between man and women.