Mathematics, 19.03.2020 23:36 maylasia
The inside diameter of a randomly selected piston ring is a random variable with mean value 15 cm and standard deviation 0.05 cm. (a) If X is the sample mean diameter for a random sample of n = 16 rings, where is the sampling distribution of X centered and what is the standard deviation of the X distribution? (Enter your standard deviation to five decimal places.)
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and standard deviation 
, the sample means with size n can be approximated to a normal distribution with mean 
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The inside diameter of a randomly selected piston ring is a random variable with mean value 15 cm an...
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