A Sample Is Taken and a Confidence Interval Is Constructed $\bar { x }$

Multiple Choice

A sample is taken and a confidence interval is constructed for the mean of the distribution. At the center of the interval is always which value?

A) The sample mean $\bar { x }$
B) The population mean ?
C) Neither $\bar { x }$ nor ? since with a sample anything can happen
D) Both $\bar { x }$