The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 30% of adult Australian sheep dogs weigh 65 pounds or more. A sample of 14 adult dogs is studied. What is the mean number of dogs who weigh 65 lb or more?
A)4.2
B)14
C)1.7146
D)2.94

Question

Quizplus · Accepted Answer

The mean number of dogs weighing 65 lb or more is calculated by multiplying the probability of an individual dog weighing 65 lb or more (30% or 0.3) by the total number of dogs in the sample (14). Thus, 0.3 * 14 = 4.2.

The Australian Sheep Dog Is a Breed Renowned for Its