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Chapter 18 Homework 1 of 1 http:// ezto. mheducation. com / hm. tpx During the morning hours at a catalog sales department, telephone calls come in at the rate( Poisson) of 39 per hour. Calls that cannot be answered immediately are put on hold. The system can handle 8 callers on hold. If additional calls come in, they receive a busy signal. The 3 customer service representatives who answer the calls spend an average of 3 minutes with a customer. Use Table 1 and Table 2. a. What is the probability that a caller will get a busy signal?( Hint: Solve for log K or ln K using trial and error.)( Do not round intermediate calculations. Round your answer to 5 decimal places.) Probability b. What is the probability that a customer will be put on hold?( Do not round intermediate calculations.