Hello, kindly help me solve this problem about Expected Return.

Reference book:

Corporate Finance: A Focused Approach by Ehrhardt and Brigham Second Edition

(5-5) Expected performance. Market and Stock J have the following probability distribution:

Probability	rM	rJ
0.3	15%	20%
0.4	9%	5%
0.3	18%	12%

a. Calculate the expected rate of return on the market and Stock J. b. Find the standard deviation of the market and the stock J. c. Calculate the coefficient of variation of the market and the stock J.

Thanks!