Evaluate rs+14srs+14sr, s, plus, 14, s when r=6r=6r, equals, 6 and s=\dfrac14s= 4 1 s, equals, start fraction, 1, divided by, 4, end fraction.

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