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Mathematics, 23.11.2019 02:31 lovelyheart5337

In a 21 element sample, the sample mean is equal tox-bar=10; the standard error of the mean is equal to 5. if the two-tailed combined proportions for the 90% confidence interval for the true mean is either t0.10,20 = 1.725 or t0.05,20 = 2.086, what are the limits of the confidence interval?

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