Posted by **Anonymous** on Friday, November 4, 2011 at 2:42pm.

A sample of n = 9 has a mean of M = 72 with SS = 162. Use the sample to make a point estimate of ì and to construct the 90% confidence interval for U. (Round all answers to two decimal places.)

U = ? ± ? ( ?)

The 90% confidence interval for U:

( ? , ? )

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