Given Data:-
[tex]68,71,77,82,85,88,89,90,92,93,96,99[/tex]To find the sample mean, add all the numbers and divide it by the total number of data given.H
[tex]\begin{gathered} x=\frac{68+71+77+82+85+88+89+90+92+93+96+99}{12} \\ x=\frac{1030}{12} \\ x=85.833 \end{gathered}[/tex]So the mean of the given data is 85.833