P8-10 Assessing return and risk Swift Manufacturing must choose between two asset purchases. The annual rate of return and the related probabilities given in the following table summarize the firm's analysis to this point. Project 257 Project 432 Probability Rate of return Probability 0.01 10% 0.05 Rate of return -10% 10 0.04 15 0.10 20 0.05 20 0.10 30 0.10 25 0.15 0.15 30 0.20 45 0.30 35 0.15 20 40 40 22482 50 0.15 40 0.10 60 0.10 45 0.10 70 0.05 50 0.05 80 0.04 100 0.01 a. For each project, compute: 1. The range of possible rates of return. 2. The average return.