Rate of return, standard deviation, coefficient of variation. Personal Finance Problem Mae is searching for a stock to inclise in his current tock portfolo. He is interabod in H-Tech ire: the mejor concem. The rule he folows is to include only socurities with a coel: of variation of renums beliow 1.21. Mke has obtained the following price information for the period 2015 through 2018 . H.Tech stock, being growth-oriented, did nok pay any dividends during these 4 years a. Celculate the rate of rotum for each year, 2015 through 2018 , for H-Tech stock b. Assume that each year's retum is oqualy probablo and calculate the average retum over this time period c. Calculate the standard deviation of returns ovor the past 4 years. (Hint. Treat this dois as a sample) d. Based on b and c determine the coefticient of variation of rehums for the security. e. Given the calculation in d what should be Mike's decision regarding the inclasion of H-Tech stock in his portolio? a. The rate of retum for yeat 2015 is 4. (Round to two decimal places) Data table (Cick on the icon here in order to copy the conbets of the data tabie beiow into a tpreadsheet.)