(Expected return, standard deviation, and capital asset pricing model) The following are the end-of-month prices for both the Standard \& Poor's 500 Index and Nike's common stock. a. Using the data in the popup window. , calculate the holding-period returns for each of the months. b. Calculate the average monthly return and the standard deviation for both the S\&P 500 and Nike c. Develop a graph that shows the relationship between the Nike stock returns and the S\&P 500 Index. (Show the Nike returns on the vertical axis and the S\&P 500 Index returns on the horizontal axis.) d. From your graph, describe the nature of the relationship between Nike stock returns and the returns for the S\&P 500 Index. a. Using the data in the table, calculate the holding-period returns for each of the months for both the Standard \& Poor's 500 index and Nike's common stock and fill in the blanks below. (Round to two decimal places) (Click on the following icon in order to copy its contents into a spreadsheet.)