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Over the past 20 years, the average annual return for shortstop baseball gear has been 9% and the standard deviation has been 4%. given this information you know that the:

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meerkat18
From the given statement above, the information that can be extracted from the data is the mean which is equal to 9 % , SD equal to 4%, n is equal to 20. we can also get the variance from SD. also, we can also determine the z-score of the data which is important in the distribution.

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