Un helicóptero que está a una altura de 470m levanta una bola de hierro con una cuerda que forma un ángulo de depresión. ¿Cuál es la medida de la cuerda?

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