Swift Manufacturing is evaluating an asset purchase. The annual rate of return and the related probabilities given in the following table summarize the firm's analysis to this point

15% 0.05 25% 0.10 35% 0.10 45% 0.10 55% 0.25 65% 0.10 75% 0.10 85% 0.10 95% 0.10

a.Compute the range of possible rates of return.

b.Compute the expected return.

c.Compute the standard deviation of the returns.

d.Compute the coefficient of variation of the returns.