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Find the standardized test statistic t for a sample with n = 12, x-bar =...

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Find the standardized test statistic t for a sample with n = 12, x-bar = 18.8, and s = 2.1.Assume that the significance level is a = .01 and the alternative hypothesis is Ha: m : ? 19.3.-0.008-0.037-0.381-0.825

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