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Statement of a problem № m132

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A stock analyst wants to determine whether there is a difference in the mean rate of return for three types of stock: utility, retail, and banking stocks. The following output is obtained:  a. Using the .05 level of significance, is there a difference in the mean rate of return among the three types of stock? b. Can the analyst conclude there is a difference between the mean rates of return for utility and retail stocks? For utility and banking stocks? For banking and retail stocks?Explain.

Solution:
A stock analyst wants to determine whether there is a difference in the mean rat

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