Question
HLPaper 2
Athletes in a sports club have season's best times for the 100 m, which can be modelled by a normal distribution with mean seconds and standard deviation seconds. To qualify for a particular event, an athlete must have a season's best time of under 11 seconds. An athlete from this club who has qualified for the event is selected at random. Find the probability that they have a season's best time of under 10.7 seconds.