Answer Happy

Problem 18-4 The following information pertains to telephone calls to a motel switchboard on a typical Tuesday. Use Table 1. Service Rate (calls per minute per operator) Period Morning Afternoon Evening Period Morning Afternoon Evening Incoming Rate (calls per minute) 1.8 2.2 1.4 a. Determine the average time callers wait to have their calls answered for each period and the probability that a caller will have to wait for each period. (Round intermediate calculations and final answers to 3 decimal places.) Period Morning Afternoon Evening Wa 1.5 1.0 0.7 Pw Lmax Number of Operators 2 3 3 b. Determine the maximum line length for a probability of 96 percent. (Round your intermediate calculations to 3 decimal places and round up your final answers to the next whole number.)