Question

Suppose that the probability that a passenger will miss a flight is 0.0913. Airlines do not like flights with empty seats, but it is also not desirable to have overbooked flights because passengers must be "bumped" from the flight. Suppose that an airplane has a seating capacity of 52 passengers. (a) If 54 tickets are sold, what is the probability that 53 or 54 passengers show up for the flight resulting in an overbooked flight? (b) Suppose that 58 tickets are sold. What is the probability that a passenger will have to be "bumped"? (c) For a plane with seating capacity of 57 passengers, how many tickets may be sold to keep the probability of a passenger being "bumped" below 5%?

Answer #1

*Solutions:-*

a) If 54 tickets are sold, what is the probability that 53 or 54 passengers show up for the flight resulting in an overbooked flight is 0.0253

P(Not missing) = 1 - 0.0913 = 0.9087

n = 54

x = 53

By applying binomial distributiion:-

P(x,n) = nCx*px*(1-p)(n-x)

P(x > 53) = 0.0253

b) The probability that a passenger will have to be "bumped" if 58 are booked is 0.48

P(Not missing) = 1 - 0.0913 = 0.9087

n = 58

x = 53

By applying binomial distributiion:-

P(x,n) = nCx*px*(1-p)(n-x)

P(x > 53) = 0.48

c) We can book a maximum of 61 tickets.

P = 0.9087

X= 57

P(x>57)0.05

n= 61

P(x>57,n=61) = 0.1862

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