A technician services mailing machines at companies in the Phoenix area. Depending on the type of malfunction, the service call can take 1, 2, 3, or 4 hours. The different types of malfunctions occur at the same frequency (i. e., any service call will need either 1 hour or 2 hours or 3 hours or 4 hours with equal chance). Do not round your answers.1. Develop a probability distribution for the duration of a service call. Let X be the random variable for the duration of a service call and f(X) be the probability distribution