Suppose that a random sample of 9 adults has a mean score of 74 on a standardized personality test, with a standard deviation of 6. (A higher score indicates a more personable participant.) If we assume that scores on this test are normally distributed, find a 99% confidence interval for the mean score of all takers of this test. Give the lower limit and upper limit of the 99% confidence interval

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03-08-2024
Mathematics

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Suppose that a random sample of 9 adults has a mean score of 74 on a standardized personality test, with a standard deviation of 6. (A higher score indicates a more personable participant.) If we assume that scores on this test are normally distributed, find a 99% confidence interval for the mean score of all takers of this test. Give the lower limit and upper limit of the 99% confidence interval

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