<PRE><B>Question 363870</B>
A 95% confidence interval estimate for a population mean was computed to be (28.7, 40.9). Determine the mean of the sample, which was used to determine the interval estimate (show all work). 

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Equations:
x-bar + E = 40.9
x-bar - E = 28.7
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Add to get:
2(x-bar) = 69.6
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x-bar = 34.8
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Cheers,
Stan H.
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