The inside diameter of a randomly selected biological ring i

The inside diameter of a randomly selected biological ring is a random variable with mean value 12 cm and standard deviation 0.04 cm. If X is the sample mean diameter for a random sample of n = 16 rings, calculate mean and standard deviation of X. Answer the question posted in part (a) for a sample size of n = 64 rings. Calculate P(X GE 12.1) for n = 64 using Central Limit Theorem. Would you have enough information to calculate P(X GE 12.1) for n = 16?

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