Your company's product is targeted at school-aged adults, but you want to be more specific in your targeting. You wish to know which group likes your product more, post-secondary students or secondary students. You survey a number of students from each group, asking them to try the product and to rate it on a scale from 1 (dislike strongly) to 7 (like strongly). ,From the data provided, each value represents the rating given by one student.

Use post-secondary as population 1 and secondary as population 2.

a)Determine the sample mean for population 2.

b)Determine the point estimate for the difference between population means.