Provide solutions with answers

1. The market and Stock A have the following probability distributions:

Probability	Return on Market (M)	Return on Stock A
0.15	18%	20%
0.45	15%	17%
0.40	10%	8%

1. Calculate the expected rates of return for the market (M) and for Stock A.

2. Calculate the standard deviations for the market (M) and for Stock A.