Hector's Yard Work
Geri's Babysitting
Timo Earnings
(hours) (dollars)
$25.50
Earnings
(dollars)
Slope is 15
dollars/hour.
3D
$51.00
.
$68.00
Time
(hours)

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score