Help me please...... I really need help?

Question

Air American has a policy of booking as many as 15 people on an airplane that can only seat 14. Past studies revealed that only 85% of the booked passengers actually arrive for the flight
a) Find the probability that if air america books 15 people for the flight all 15 people will show up, and not enought seats will be available

b) Find the probability that at least one person of the 15 people booked will not show up.

Answer 1

Probability of showing for the flight is 0.85.
a)
P(all 15 show) = 0.85^15 = 0.087354
b)
P(at least 1 no-show) = 1 - P(15) = 0.91265