Question

The article mentioned in Problem 7.28 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 (a loss)?
e. between - 10 and - 20?
f. greater than - 5?
g. Compare your results in parts (d) through (f) to those in (a) through (c).


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  • CreatedJuly 16, 2015
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