Question

The table below shows the probability distribution of a random variable P(Z) -16 0.17 -15 0.53 - 14 0 -13 0.2 -12 0.1 Vhat is the expected value of Z? write your answer as a decimal

Answer 1

Expected value = -16 * 0.17 + -15 * 0.53 + -14 * 0 + -13 * 0.2 + -12 * 0.1 =

-2.72 - 7.95 + 0 - 2.6 - 1.2 = -14.47

Answer:

Expected value = -14.47