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The inside diameter of a randomly selected piston ring is a random variable with mean value 12 cm and standard deviation

The inside diameter of a randomly selected piston ring is a random variable with mean value 12 cm and standard deviation 0.04 cm.(a) If Xbar is the sample mean diameter for a random sample of n = 16 rings, where is the sampling distribution of Xbar centered, and what is the standard deviation of the Xbar distribution?

Apr 23 2020 View more View Less

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