3 Merck stock has a beta value = 0.45. U.S. Treasury securities are yielding 2.14%. Expected return on the stock market is 8.0%. U.S. prime rate 3.50%. Based only on this information, calculate Merck stock's expected (or required) rate of return to its stockholders. (HINT: Use "capital asset pricing model" or "security market line.") Show all work