A rаndоm sаmple оf 16 pаssenger fares оn Amtrak between Chicago and Denver resulted in a mean fare of $180 and a standard deviation of $40. We are interested in estimating the Confidence Interval on the true "Population Mean" fare between Chicago and Denver on Amtrak. If we want to develop a 94% Confidence Interval estimate on the "Population Mean" fares between Chicago and Denver on Amtrak, which Excel function (among the following) will give us the correct "Margin of Error" value directly?