Question

An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between

150

lb and

201

lb. The new population of pilots has normally distributed weights with a mean of

156 lb

and a standard deviation of

33.8 lb

a. If a pilot is randomly​ selected, find the probability that his weight is between

150

lb and

201

lb.The probability is approximately

nothing.

​(Round to four decimal places as​ needed.)

b. If

36

different pilots are randomly​ selected, find the probability that their mean weight is between

150

lb and

201

lb.The probability is approximately

nothing.

​(Round to four decimal places as​ needed.)

c. When redesigning the ejection​ seat, which probability is more​ relevant?

Answer 1

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