Use the normal distribution ofsh lengths for which the mean is B indies and the standard deviation is 5 inches. Assume the variable x is normally distributed. {a} What percent of the sh are longer than 13 inches? {b} If 300 sh are randomly selectedr about how many would you expect to be shorter than ? inches? {a} Approximately 'it: of sh are longer than 13 inches. {Round to Mo decimal places as needed.) {b} You would expect approximately sh to be shorter than 1' inches. [Round to the nearest sh.)