Question: Two researchers plan to construct a 99% confidence interval for the mean of a Normal population with (known) standard deviation . Researcher A will use

Two researchers plan to construct a 99% confidence interval for the mean of a Normal population with (known) standard deviation . Researcher A will use a random sample of 50 individuals. Researcher B will use a random sample of 800 individuals. Then the margin of error for Researcher A's estimate is _____ times that of Researcher B's estimate. Which number below correctly fills in the blank?

None of the above. A larger sample size will decrease the margin of error.

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