Question 13: (from chapter 7) An article reported that the stock market in China had a mean return of 3.17% in 2013. Assume that the returns for stocks on the Chinese stock market were distributed normally, with a mean of 3.17 and a standard deviation of 10. If you select an individual stock from this population, what is the probability that it would have a return: a. less than 0 (i.e., a loss)? b. between -10 and -20? c. greater than -5? If you selected a random sample of four stocks from this population, what is the probability that the sample would have a mean return: d. less than 0 (i.e., a loss)? e. between -10 and -20? f. greater than -5? g. Compare your results in parts (d) through (i) to those in (a) through (c) and comment