Question #4

The below sample data represents the cost of 9 name-brand drugs and their corresponding generic equivalent. (Use Name Brand as Sample1)

Name

Brand Question #4

The below sample data represents the cost of 9 name-brand drugs and their corresponding generic equivalent. (Use Name Brand as Sample1)

Name brand 120 150 135 140 160 165 140 120 165

Generic brand 99 135 130 119 139 150 129 119 160

a) Compute a two-sided 90% confidence Interval estimate for d. (5 points)

b) Based on your interval, can you safely conclude that generics are less expensive than name brand? Why or why not? (5 points)