Answer
$Mean=86.572~h$
$Median=86.251~h$
Work Step by Step
Winning times in ascending order:
82.087, 83.601, 83.687, 86.251, 86.291, 91.538, 92.552
$Mean=\frac{82.087+83.601+83.687+86.251+86.291+91.538+92.552}{7}=86.572$
There are 7 observations (odd). The median is the value of the fourth observation.
$Median=86.251$
