When Estimating a Population Mean μ , Where the Population

Multiple Choice

When estimating a population mean μ , where the population standard deviation σ is known, we can:

A) define the limits of an interval estimate of μ as
B) define the limits of an interval estimate of μ as
C) choose a smaller z value, construct a narrower confidence interval, and achieve a higher confidence level
D) choose a larger z value, construct a wider confidence interval, and achieve a lower confidence level