Question

. The monthly worldwide average number of airplane crashes of commercial airlines is 2.2. What is the probability that there will be a. more than 2 such accidents in the next month?

Answer 1

Probability (N more than 2) = 0.3773

Explanation:

Given:

Average number of crashes (N) = 2.2

Find:

Probability (N more than 2)

Computation:

Probability (N more than 2) = [1-P(N=0)-P(N=1)-P(N=2)]

Probability (N more than 2) = [1 - e⁻²°² - 2.2e⁻²°² - (2.2²e⁻²°²)/2]

Probability (N more than 2) = 0.3773