A statistics class at Wilmington College has 25 students of which 15 are math majors and 10 are business majors. The professor randomly selects five students to work together on a group project. What is the mean of this probability distribution if selecting a business major is defined as a success?
A)1.09
B)1.69
C)2.00
D)0.76

Question

Quizplus · Accepted Answer

The mean of a binomial distribution is calculated as n*p, where n is the number of trials (5 students selected) and p is the probability of success (selecting a business major, which is 10/25 or 0.4). Thus, the mean is 5 * 0.4 = 2.00.

A Statistics Class at Wilmington College Has 25 Students of Which