An engineer ls going to redeslgn an ejection seat for ah airplane The seat was designed for pilots weighing between 130 lb and 171 lb The new population of pilots has normally distrlbuted weights with a mean of138 lb and a standard deviation of32.T lb. Click here to View p_age 1 ol the standard normal distributlon Click here to View [age 2 at the standard normal distributlon a. It a pilot is randomly selected, hd the probabillty that his weight is between 130 lb and 171 lb The probability is approximately . (Round to four decimal places as needed ] b. It 3? dierent pilots are randomly selected. nd the probability that their mean weig ht is betweeh 130 lb and 1?1 lb The probability is approximately . (Round to four decimal places as needed ] c. When redaignihg the ejedion seal. which probablllty is more relevant? O A. Part (b) because the seat performance for a sample of pilots is more important. 0 B. Part (a) because the seat performance for a sample of pilots is more important. 0 C. Part (b) because the seat performance for a single pilot is more important (D D. Part (a) because the seat performance for a single pilot is more important