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show detailed work. Problem # 2: The diameters of eight samples of spur gears randomly chosen for inspection arc: 2.2, 1.8, 3.1, 2.0, 2.4, 2.0,

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Problem # 2: The diameters of eight samples of spur gears randomly chosen for inspection arc: 2.2, 1.8, 3.1, 2.0, 2.4, 2.0, 2.1, and 1.2 in. Assuming a normal population, construct a 95% confidence interval for the corresponding true mean of the spur gears

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