1. A grocery store's receipts show that Sunday customer purchases have a skewed distribution with a mean of $30 and a standard deviation of $20. a. What is the mean, standard deviation, and shape of the distribution of the average purchase for the (4) next 50 customers? How do you know? b. What is the probability that the next 50 Sunday customers will spend an average of at least $40? c. What is the probability that the next 50 Sunday customers will spend between $25 and $32? (3) (5)