Question

Before every flight, the pilot must verify that the total weight of the load is less than the maximum allowable load for the aircraft. The aircraft can carry 40 passengers, and a flight has fuel and baggage that allows for a total passenger load of 6,600 lb. The pilot sees that the plane is full and all passengers are men. The aircraft will be overloaded if the mean weight of the passengers is 6,600 lb - 165 lb. What is the probability that the aircraft is overloaded? Should the pilot take any action to correct for an overloaded aircraft? Assume that weights of men are normally distributed with a mean of 174.8 lb and a standard deviation of 36.9. greater than 40 The probability is approximately - (Round to four decimal places as needed.)

Answer 1

Solution :

P(x > 165) = 1 - P(x < 165)

= 1 - P[(x - $\mu$ ) / $\sigma$ < (165 - 174.8) / 36.9]

= 1 - P(z < -0.27   

= 0.3936

Probability = 0.3936