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A random sample of 25 indivuduals is selected from a pop. of 20....

label Mathematics
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and a treatment is adminstered to each individual in the sample. After treatment the sample mean is found to be M=22.2 with SS=384 Find the difference between the mean for the treated sample and the mean for the original population

Oct 23rd, 2017

Sample standard deviation = sqrt (. SS) = sqrt (384) = 19.596

Diff.  = 22.2 - 19.596 = 2.604

answer= 2.604 is the diff. Between the mean of the sample and the mean for the original population.

Nov 26th, 2014

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