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April 20, 2014

Homework Help: stat

Posted by carl on Monday, May 14, 2012 at 9:33am.

for randomly selected adults, IQ scores are normally distributed with a standard deviation of 15. the scores of 14 randomly selected college students are listed below. use a 0.10 significance level to test the claim that the standard deviation of IQ scores of college students is less than 15. round the smaple standard deviation to three decimal places.

115, 128, 107, 109, 116, 124, 135
127, 115, 104, 118, 126, 129, 133

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