Many seniors are ordering their drugs online to take advantage of lower costs for these pharmacies. A

Question:

Many seniors are ordering their drugs online to take advantage of lower costs for these pharmacies. A random sample of nine online pharmacies was selected and the cost of a 10-mg Buspar (Buspirone) tablet recorded, as given in the following table.

a. Test the hypothesis of no difference in costs between brand and generic Buspar 10-mg tablets at the Î± = .05 level of significance.
b. Find the estimated savings per tablet by purchasing the generic as opposed to the brand-name tablets with a 95% confidence interval.