A camera manufacturer just shipped a batch of 36 digital cameras to local retailers and seven of the cameras have a defective sensor. Cutler Electronics received eight of these digital cameras. What is the mean of this probability distribution?
A)1.95
B)2.28
C)2.71
D)1.56

Question

Quizplus · Accepted Answer

The mean of a probability distribution, in this context, is found by multiplying the probability of selecting a defective camera by the total number of cameras received. The probability of selecting a defective camera is the number of defective cameras divided by the total number of cameras, which is 7/36. Cutler Electronics received 8 cameras, so the mean is (7/36) * 8 = 56/36 = 1.56.

A Camera Manufacturer Just Shipped a Batch of 36 Digital