Average sales for an online textbook distributor were $71.75 per customer per purchase. Assume the sales are normally distributed. If the standard deviation of the amount spent on textbooks is $8.79, find these probabilities for a randomly selected customer of the online textbook distributor. Refer to the table of values Area Under the Standard Normal Distribution) as needed. If necessary, round intermediate calculations to the nearest hundredth. Part: 0/2 Part 1 of 2 (a) He or she spent more than $63 per purchase. The probability that a randomly selected customer spent more than $63 per purchase is %. X 5