Suppose that a simple random sample is taken from a normal population having a standard deviation of

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Suppose that a simple random sample is taken from a normal population having a standard deviation of 10 for the purpose of obtaining a 95% confidence interval for the mean of the population.

a. If the sample size is 4, obtain the margin of error.

b. Repeat part (a) for a sample size of 16.

c. Can you guess the margin of error for a sample size of 64? Explain your reasoning.

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