An analyst would like to identify the $95\%$ confidence interval of returns around the mean for a

normally distributed sample of $29$ U$.$S$.$ private equity firms for which population variance is

known. What is the reliability factor used to construct the confidence interval?

$1\mathrm{.}650$

$1\mathrm{.}701$

$1\mathrm{.}960$

$2\mathrm{.}048$