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 boy takes between 480 and 525 seconds. O 0.7433 O 0.2035 O 0.8035 O 0.2567 O 0.1965 O None of these