Question: I go this question wrong and I was just wondering if someone could tell me the correct answers and show how to do it? Consider

I go this question wrong and I was just wondering if someone could tell me the correct answers and show how to do it?

Consider a waiting line model where there is ONLY one line that customers join; there are, however, three cashiers that serve the customers joining the line. The custmers arrive at rate of 52/hour; cashiers have a service rate of 20/hour. Anwer the following: (Round ALL answers to TWO places of decimal; all times are to be converted into minutes)

(1) The average "waiting time" for a customer is = .13 minutes

(2) The average time needed to check out after joining the line = .33 minutes (3) What is the probability that an arriving customer will NOT have to wait in line? Probability of not waiting = 0.68 (enter your response in decimal fraction and NOT percentage)

Overall instructor remarks:

Not at all sure how you got these answers.

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