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(Solved): Suppose that a random sample of 15 adults has a mean score of 71 on a standardired personality test ...




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Suppose that a random sample of 15 adults has a mean score of 71 on a standardired personality test, with a standard deviation of 4 . (A higher seore indicates a more personable participant.) if we assume that scores on this test are normally distributed, find a confidence interval for the inean score of alf takers of this test. Give the lower limit and upper limit of the confidence interval. Carry your intermedlate computations to at least three decimal places. pound your answers to one decimal place. (If necessary, consult a fist of formulas.)


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