Data indicates that for each trip to Supermart, Jonny spends an average of 45 minutes with a standard deviation of 10 minutes in the store. The lengths of time spent in the store have a bell-shaped distribution. Johnny enters the store, find the percentage that he will be in the store for each of the intervals of time listed below: a) Between 25 and 45 minutes. b) less than 15 minutes or greater than 55 minutes. c) What would be the bottom 16% of the time he spends at Supermart