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July 8, 2015

Homework Help: statistics

Posted by Alyssa on Monday, December 3, 2012 at 11:48am.

Scores on the ACT college entrance exam are Normally distributed with a mean = 20 and standard deviation σ = 5. An SRS of 25 ACT scores is selected, construct a 95% Confidence Interval for the sample mean (X-Bar) and interpret your result.

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