Which leads to an increase in the margin of error

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Problem 1: Which of the following situations, all else staying the same, leads to an increase in the margin of error when constructing an interval estimate of a population mean (if the population standard deviation is unknown)?

A. If the sample standard deviation decreases.

B. If the level of confidence increases.

C. If the sample mean increases.

D. If the sample size increases.

 

Reference no: EM132694835

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