The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 40% of adult Australian sheep dogs weigh 65 pounds or more. A sample of 13 adult dogs is studied. What is the probability that exactly 9 of them weigh 65 lb or more?
A)0.1845
B)0.9757
C)0.8155
D)0.0243

Question

Quizplus · Accepted Answer

The probability can be calculated using the binomial probability formula. With n=13, p=0.40, and k=9, the probability is approximately 0.0243.

The Australian Sheep Dog Is a Breed Renowned for Its