Suppose that a random sample of 11 adults has a mean score of 79 on a standardized personality test, with a standard deviation of 7 . (A higher score indicates a more personable participant.) If we assume that scores on this test are normally distributed, find a 90% confidence interval for the mean score of all takers of this test. Then find the lower limit and upper limit of the 90%

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Suppose that a random sample of

11

adults has a mean score of

79

on a standardized personality test, with a standard deviation of

7

. (A higher score indicates a more personable participant.) If we assume that scores on this test are normally distributed, find a

90%

confidence interval for the mean score of all takers of this test. Then find the lower limit and upper limit of the

90%

confidence interval

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