Suppose that last month, WestJet flights arrived on time 81% of the time and you were on 3 of those flights. (Round your answers to 4 decimal places, if needed.)

Question

(a) Given that each flight is independent of one another, what is the probability that all of your flights arrived on time?

Answer: 

(b) What is the probability that none of your flights arrived on time?

Answer: 

(c) What is the probability that at least one of your flights arrived on time?

Answer: 

Answer 1

probability all 3 flights on time = (0.81)^3

probability none of flights on time = (0.19)^3

probability at least one of flights on time = 1 - (0.19)^3