It is estimated that 25% of households own a riding lawn mower. A sample of 17 households is studied. What is the probability that exactly 9 of these own a riding lawn mower?
A)0.9721
B)0.9907
C)0.0279
D)0.0093

Question

Quizplus · Accepted Answer

This is a binomial probability problem where n = 17, p = 0.25, and we want the probability of exactly 9 successes. Using the binomial probability formula, the probability is approximately 0.0093.

It Is Estimated That 25% of Households Own a Riding