The expected value (mean)of a binomial variable is 15.The number of trials is 20.The probability of "success" is
A)0.25
B)0.50
C)0.75
D)0.30

Question

Quizplus · Accepted Answer

The expected value (mean) of a binomial distribution is calculated as n * p, where n is the number of trials and p is the probability of success. Given that the mean is 15 and the number of trials is 20, we have 20 * p = 15. Solving for p gives p = 15/20 = 0.75.

The Expected Value (Mean)of a Binomial Variable Is 15