Question

Suppose that 14% of people are left handed. If 9 people are selected at random what is the probability that exactly 2 of them are left handed

Answer 1

0.245

Explanation:

This is a case of binomial probability, since either a person is left-handed or is not left-handed. Then:

P(left-handed) = 0.14

and the binomial probability of interest is found using a calculator with distribution functions:

binompdf(9,0.14,2) = 0.245