The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 45% of adult Australian sheep dogs weigh 65 pounds or more. A sample of 13 adult dogs is studied. What is the probability that no more than 3 of them weigh 65 lb or more?
A)0.9731
B)0.9071
C)0.0929
D)0.0269

Question

Quizplus · Accepted Answer

This is a binomial probability problem where n = 13, p = 0.45, and we want P(X ≤ 3). Using the binomial probability formula or a binomial calculator, P(X ≤ 3) ≈ 0.0929.

The Australian Sheep Dog Is a Breed Renowned for Its