A sample of n = 9 scores has a mean of M = 13. After one score

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A sample of n = 9 scores has a mean of M = 13.
After one score is added to the sample, the mean is found to be M = 12. What is the value of the score that was added?

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Essentials Of Statistics For The Behavioral Sciences

ISBN: 9781133956570

8th Edition

Authors: Frederick J Gravetter, Larry B. Wallnau

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Question Posted: Sep 22, 2015 08:49 AM

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A sample of n = 9 scores has a mean of M = 13. After one score

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