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Exercise U4.1 Find a 90% confidence interval for a population mean u for these values: (a) n = 125, x = 0.84, s2 = 0.086

Exercise U4.1 Find a 90% confidence interval for a population mean u for these values: (a) n = 125, x = 0.84, s2 = 0.086 (b) n = 50, x =21.9, s2 = 3.44 (c) Interpret the intervals found in parts a and b

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