Develop a probability distribution for the service call

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Question: A technician services mailing machines at companies in the Phoenix area. Depending on the type of malfunction, the service call can take one, two, three, or four hours. The different types of malfunctions occur at about the same frequency.

a. Develop a probability distribution for the duration of a service call.

b. Draw a graph of the probability distribution.

c. Show that your probability distribution satisfies the conditions required for a discrete probability function.

d. What is the probability that a service call will take three hours?

e. A service call has just came in, but the type of malfunction is unknown. It is 3:00 P.M. and service technicians usually get off work at 5:00 P.M. What is the probability that the service technician will have to work overtime to fix the machine today?

Reference no: EM131455538

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