The Information Systems Audit and Control Association surveyed office workers to learn about the anticipated usage of office computers for personal holiday shopping. Assume that the number of hours a worker spends doing holiday shopping on an office computer follows an exponential distribution.
Round your answers to four decimal places.
a.)The study reported that there is a .53 probability that a worker uses the office computer for holiday shopping 5 hours or less. Is the mean time spent using an office computer for holiday shopping closest to 5.5, 6, 6.6, or 7 hours?
b.)Using the mean time from part (a), what is the probability that a worker uses the office computer for holiday shopping more than 10 hours?
c.) What is the probability that a worker uses the office computer for holiday shopping between four and eight hours?
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