The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 25% of adult Australian sheep dogs weigh 65 pounds or more. A sample of 11 adult dogs is studied.
What is the mean number of dogs who weigh 65 lb or more?
A) 11
B) 2.0625
C) 2.75
D) 1.4361

Question

Quizplus · Accepted Answer

To find the mean number of dogs who weigh 65 pounds or more, we need to first calculate the total number of dogs who weigh 65 pounds or more in the sample.

25% of 11 dogs is (25/100) x 11 = 2.75 dogs.

Therefore, the mean number of dogs who weigh 65 pounds or more is 2.75.

The best choice is C.

The Australian Sheep Dog Is a Breed Renowned for Its