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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING

Question 89

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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
An investor puts $15,000 into each of four stocks,labeled A,B,C,and D.The table shown below contains the means and standard deviations of the annual returns of these four stocks.
THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING: An investor puts $15,000 into each of four stocks,labeled A,B,C,and D.The table shown below contains the means and standard deviations of the annual returns of these four stocks. -Assuming that the returns of these four stocks are independent of each other,find the mean,and standard deviation of the total amount that this investor earns in one year from these four investments.
-Assuming that the returns of these four stocks are independent of each other,find the mean,and standard deviation of the total amount that this investor earns in one year from these four investments.

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Let Rj be the annual return on stock j.
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