Sam scored 59, 64, and 68 on three test. how many points should he get on the fourth test to get an average score of 70?

a. 63.67 points
b. 65.25 points
c. 75 points
d. 89 points

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