An airline company is considering a new policy of booking as many as 318 persons on an airplane that can seat only 310. (Past studies have revealed that only 90% of the booked passengers actually arrive for the flight.) Estimate the probability that if the company books 318 persons. not enough seats will be available.

Hence, the required probability is .

Given :

of the booked passengers arrive for the flight.

Number of booked passengers n

Number of seats available x

To find :

The probability that if the company books 318 persons.

Explanation :

Mean  

Standard deviation    where

Required probability

yes

Step-by-step explanation:

because if you divide -5 by 20, you will get -0.25. And -0.25 can be made into fraction form -1/4