Risk and probability Micro$-$Pub, Inc., is considering the purchase of one of two digital cameras, R and S$,$ each of which requires an initial investment of $$2,000.$ Management has

constructed the following table of estimates of rates of return 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 return for each camera.

c$.$ Which camera purchase is riskier? Why?

Data table

$($Click on the icon here $$ in order to copy the contents of the data table below into a

spreadsheet.$)$