The average time spent at the gym lifting weights is about 55.1 minutes per day. If the average time lifting weights is normally distributed with a standard deviation of 14.71 minutes, answer the following: a. What is the probability the duration of a weightlifting workout is less than 48 minutes? b. What is the probability that in a random sample of 10 workouts, the average duration of the weightlifting workouts is less than 48 minutes