A survey indicates that for each trip to a supermarket, a shopper spends an average of 43 minutes with a standard deviation of 12 minutes in the store. The lengths of time spent in the store are normally distributed and are represented by the variable x. A shopper enters the store.

(a) Find the probability that the shopper will be in the store for each interval of time listed below.

(b) When 200 shoppers enter the store, how many shoppers would you expect to be in the store for each interval of time listed below?

1. Between 22 and 52 minutes 

2. More than 37 minutes