When constructing a confidence interval for a population mean, if a population is normally distributed and a small sample is taken, then the distribution of is based on ________.
A) the z distribution
B) the t distribution
C) neither the z nor the t distribution
D) both the z and the t distribution

Question

When constructing a confidence interval for a population mean, if a population is normally distributed and a small sample is taken, then the distribution of  is based on ________.
A) the z distribution 
B) the t distribution 
C) neither the z nor the t distribution 
D) both the z and the t distribution

Quizplus · Accepted Answer

This will give you the sample at least as large as we need it and because we may not know the true value of the standard deviation.

When Constructing a Confidence Interval for a Population Mean, If