Homework Help: business statistics

Posted by Bryant on Saturday, August 1, 2009 at 11:06am.

Your statistics instructor wants you to determine a confindence interval estimate for the mean test score for the next exam. In the past, the test scores have been normally distributed with a mean of 74.2 and a standard deviation of 30.9. A 95% confidence interval estimate if your class has 30 students is?

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