After 6 points have been added to every score in a sample, the mean is found to be M = 70 and the standard deviation is s = 3. What were the values for the mean and standard deviation for the original sample?
Moriginal
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soriginal
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After every score in a sample has been multiplied by 3, the mean is found to be M = 48 and the standard deviation is s = 18. What were the values for the mean and standard deviation for the original sample?
Moriginal
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soriginal
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