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5. :1 sample of size n = 22 is taken from a population of scores. The sample mean is 60. Show the difference between the

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5. :1 sample of size n = 22 is taken from a population of scores. The sample mean is 60. Show the difference between the 99% confidence interval constructed in each of these cases: [a] you know the standard deviation of the population is 10, [b] you do not know the population standard deviation, but you know 5 =10

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