The probability distribution for the number of job applications processed at a small employment agency during a typical week is given in the file S04_43.xlsx.
a. Assuming that it takes the agency’s administrative assistant two hours to process a submitted job application, on average how many hours in a typical week will the administrative assistant spend processing incoming job applications?
b. Find an interval with the property that the administrative assistant can be approximately 95% sure that the total amount of time he spends each week processing incoming job applications will be in this interval.