CFA Practice Question

There are 434 practice questions for this study session.

CFA Practice Question

If the size of the sample being used increases, the width of a 0.95 confidence interval estimate for a population mean will ______.
A. become narrower
B. become wider
C. not change

User Contributed Comments 2

User Comment
danlan When size increase, t statistics becomes closer to z statistics
mchu Since population variance is constant no matter how large the sample size is, as we increase N, sigma/N decrease, thus the width is narrower.
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