Next Question engineer is going to redesign an ejection seat for an airplane. The seat was designed for een 140 lb and 191 lb. The new population of pilots s normally distributed weights with a mean of 147 lb and a standard deviation of 33.8 lb. ick here to view page 1 of the standard normal distribution. lick here to view page 2 of the standard normal distribution. a. If a pilot is randomly selected, find the probability that his weight is between 140 lb and 191 lb. The probability is approximately 0.4864 . (Round to four decimal places as needed.) b. If 36 different pilots are randomly selected, find the probability that their mean weight is between 140 lb and 191 lb. The probability is approximately . (Round to four decimal places as needed.) its ess Enter your answer in the answer box and then click Check