The warden of the California Mens Colony believes that 60 of

The warden of the California Men\'s Colony believes that 60% of the prisoner\'s sent to his institution are repeat offenders. If he takes a sample of 20 new arrivals, find the expected value in the number of repeat offenders. (Remember to use the general form for the formula used)

Solution

expected value will be

E(X) = p*n = 0.60 * 20 = 12