Question

1) Air-USA has a policy of booking as many as 22 persons on an airplane that can seat only 21. (Past studies have revealed that only 84% of the booked passengers actually arrive for the flight.)

Find the probability that if Air-USA books 22 persons, not enough seats will be available.
prob =

2) Is this probability low enough so that overbooking is not a real concern for passengers if you define unusual as 5% or less?
A) yes, it is low enough not to be a concern
B) no, it is not low enough to not be a concern

3) What about defining unusual as 10% or less?
A) no, it is not low enough to not be a concern
B) yes, it is low enough not to be a concern

4) A distribution of values is normal with a mean of 190.2 and a standard deviation of 86.2.

Find P12, which is the score separating the bottom 12% from the top 88%.
P12 =

Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

Answer 1