1. A market study suggests that shoppers at a particular large department store spend an average of $36 per shopping trip. The variability in the distribution of purchase amounts is measured by the standard deviation of $12. If during a particular morning 42 shoppers will make purchases at the store, what is the probability that the total purchases will be below $1,450? What do I know? M = 360 T = total purch 0 = 12 n = 42 What do I want to find out? PCt