A sprint duathlon consists of a 10km run and a 20km bike ride. The mean finish time of all participants in a recent duathlon was 1.67 hours with a
standard deviation of 0.25 hours.
Suppose ONE random sample of 30 participants yielded a mean finishing time of 1.59

hours with a standard deviation of 0.30 hours.
Amongst ANY 30 randomly sampled participants, what is the probability that the sample
mean finishing time exceeded 2 hours?
O very close to O
O .09510
0.90490
O can't say