The Principal Randomly Selected Six Students to Take an Aptitude $\begin{array} { l l l l l l } 71.6 & 81.0 & 88.9 & 80.4 & 78.1 & 72.0\end{array}$

Multiple Choice

The principal randomly selected six students to take an aptitude test. Their scores were:
$\begin{array} { l l l l l l } 71.6 & 81.0 & 88.9 & 80.4 & 78.1 & 72.0\end{array}$
Determine a $90 \%$ confidence interval for the mean score for all students.

A) $( 73.26,84.07 )$
B) $( 84.07,73.26 )$
C) $( 83.97,83.97 )$
D) $( 73.36,83.97 )$
E) $( 83.97,73.36 )$