Risk and probability Micro-Pub, Inc., is considening the purchase of one of two microfilm cameras, R and S. Both should provide benefits over a 10-year period, and each requires an initial investment of $4,000. Management has constructed the following table of estimates of rates of retum and probabilities for pessimistic, most likely, and optimistic results: a. Determine the range for the rate of return for each of the two cameras. b. Determine the value of the expected retum for each camera. c. Which camera purchase is riskier? Why? Data table a. The ra (Click on the icon here Db in order to copy the contents of the data table below into a spreadsheet.)