Suppose the time it takes a data collection operator to fill out an electronic form for a database is uniformly between 1.5 and 2.2 minutes. (a) What is the mean and variance of the time it takes an op- erator to fill out the form? (b) What is the probability that it will take less than two min- utes to fill out the form? (c) Determine the cumulative distribution function of the time it takes to fill out the form