Question

the time, in seconds,taken by 75 athletes to run a 500m race the number of athletes who compete the race in less than 125 seconds ​

Answer 1

Answer:

The number of athletes who completed the race in <14.6 seconds is n(13.8 - 14) + n(14 - 14.2) + n(14.2 - 14.4) + n(14.4 - 14.6) = 2 + 4 + 5 + 71 = 82