Ex. 46. The inside diameter of a randomly selected piston ring is a random variable with mean value 12 cm and standard deviation .04 cm. a. If ?̅ is the sample mean diameter for a random sample of n= 16 rings, where is the sampling distribution of ?̅ cent
Ex. 46.
The inside diameter of a randomly selected piston ring is a random variable with mean value 12 cm and standard deviation .04 cm.
a. If ?̅ is the sample mean diameter for a random sample of n= 16 rings, where is the sampling distribution of ?̅ centered, and what is the standard deviation of the ?̅ distribution?
b. Answer the questions posed in part (a) for a sample size of n = 64 rings.
c. For which of the two random samples, the one of part (a) or the one of part (b), is ?̅ more likely to be within .01 cm of 12 cm? Explain your reasoning.
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Ex. 46. The inside diameter of a randomly selected piston ring is a random variable with mean value 12 cm and standard deviation .04 cm. a. If ?̅ is the sample mean diameter for a random sample of n= 16 rings, where is the sampling distribution of ?̅ cent
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Will rate!!
The inside diameter of a randomly selected piston ring is a random variable with mean value 13 cm and standard deviation 0.08 cm (a) tf Х is the sample mean diameter for a random sample of n-16 rings, where is the sampling istribution of Х centered and what is the str dad dnit ond the x distribution? (Enter your standard deviation to five decimal places) center standard deviation (b) Answer the questions posed in part (o) for a...
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