A Physical Fitness Association Is Including the Mile Run in Its

Multiple Choice

A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 450 seconds and a standard deviation of 40 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 358 seconds.

A) .4893
B) .5107
C) .9893
D) .0107