10 of 10 (9 complete) HW Score: 80%, 8 of 10 pts at X 6.1.23-1 Question Help A purveyor of designer maternity wear sells dresses and pants priced around $300 each for an average total sale of $1,000. The total sale has a normal distribution with a standard deviation of $200. Complete parts a through e below. a. Calculate the probability that a randomly selected customer will have a total sale of more than $1,200 The probability is 1586 (Round to four decimal places as needed.) b. Compute the probability that the total sale will be within 13 standard deviations of the moon total sales The probability is (Round to four decimal places as needed.)