Solve the problem.
-From a group of 3 men and 4 women, a delegation of 2 is selected. What is the expected number of Men in the delegation?
A) 0.48
B) 1
C) 0.86
D) 0.57

Question

Quizplus · Accepted Answer

The expected number of men is calculated by finding the probability of selecting 0, 1, or 2 men and multiplying by the number of men, then summing these products. The probability of selecting 0 men is (4C2)/(7C2), 1 man is (3C1 * 4C1)/(7C2), and 2 men is (3C2)/(7C2). The expected value is 0*(probability of 0 men) + 1*(probability of 1 man) + 2*(probability of 2 men) = 0.86.

Solve the Problem. -From a Group of 3 Men and 4 Women, a 4