8-15 Edward Owen is responsible for the maintenance, rental, and day-to-day operation of several large apartment complexes on the upper-east side of New York City. Owen is especially concerned about the cost projections for replacing air condi- tioner (A/C) compressors. He would like to simu- m late the number of A/C failures each month. Using data from similar apartment buildings he manages in a New York City suburb, Clark establishes the probability of failures during a month as follows: NUMBER OF A/C FAILURES PROBABILITY 0.10 1 0.17 0.21 0.28 4 0.16 0.07 0.01 (a) Simulate Owen's monthly A/C failures for a period of three years. Compute the average number of failures per month. (b) Explain any difference between the simu- lated average failures and the expected value of failures computed by using the probability distribution. ot wol