Average sales for an online textbook distributor were $72.61 per customer per purchase. Assume the sales are normally distributed. If the standard deviation of the amount spent on textbooks is $8.12, use a graphing calculator to find these probabilities for a randomly selected customer of the online textbook distributor. Round your answers to 3 decimal places. Part: 0/2 Part 1 of 2 (a) Find the probability that he or she spent more than $65 per purchase. The probability that a randomly selected customer spent more than $65 per purchase is

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