The time it takes to complete a test was recorded for a sample of 15 students. The results follow. $$\begin{array} { l l l l l }
25 & 45 & 50 & 32 & 38 \
41 & 41 & 48 & 30 & 40 \
39 & 49 & 46 & 44 & 36
\end{array}$$ Use Excel to estimate the variance with a 90% level of confidence.

Question

The time it takes to complete a test was recorded for a sample of 15 students. The results follow. $$\begin{array} { l l l l l } 
25 & 45 & 50 & 32 & 38 \
41 & 41 & 48 & 30 & 40 \
39 & 49 & 46 & 44 & 36
\end{array}$$ Use Excel to estimate the variance with a 90% level of confidence.

Quizplus · Accepted Answer

The Answer of The time it takes to complete a test was recorded for a sample of 15 students. The results follow. $$\begin{array} { l l l l l } 
25 & 45 & 50 & 32 & 38 \
41 & 41 & 48 & 30 & 40 \
39 & 49 & 46 & 44 & 36
\end{array}$$ Use Excel to estimate the variance with a 90% level of confidence.

The Time It Takes to Complete a Test Was Recorded 254550323841414830403949464436\begin{array} { l l l l l } 25 & 45 & 50 & 32 & 38 \\41 & 41 & 48 & 30 & 40 \\39 & 49 & 46 & 44 & 36\end{array}254139​454149​504846​323044​384036​

The Time It Takes to Complete a Test Was Recorded $\begin{array} { l l l l l } 25 & 45 & 50 & 32 & 38 \\41 & 41 & 48 & 30 & 40 \\39 & 49 & 46 & 44 & 36\end{array}$