The manager of a Piggly Wiggly grocery store claims a membership card will save consumers (through automatic discounts and extra coupons) at least $15.00 per week, on average. To check this claim, a random sample of 11 shoppers with membership cards was obtained and their weekly grocery bills were inspected. The sample mean savings was =$14.35 and =$3.75. Assume the distribution of savings is normal.

A.) Find bounds on the value associated with this hypothesis test. Round to two decimal places.

Finds the bounds mathematically and not graphically.