solve using excel an dshiw foermulas to understand Stella likes to go to the Walgreens store in Rosemead every morning. She spends an average of 20 minutes with a standard deviation of 5 minutes inside the store. The length of times is normally distributed. A shopper enters the Rosemead Walgreens store. Find the probability that: a) The shopper will be in store more than 25 minutes b) The shopper will be in the store for between 15 and 30 minutes c) The shopper will be in the store for less than 10 minutes d) If 100 shoppers enter the Walgreens store, how many shoppers would be expected to be in the store between 15 and 30 minutes