Question: True or False? a. For a fixed confidence level, when the sample size increases, the width of the confidence interval for a population mean decreases.

True or False?

a. For a fixed confidence level, when the sample size increases, the width of the confidence interval for a population mean decreases.

b. As the sample size increases, the power of the test of the null hypothesis, H0, decreases.

c. and are unrelated to one another.

d. If we take a large enough sample from any population, then the histogram for the sample data would be expected to look bell-shaped.

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