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 can be approximated by a normal model with a mean of 450 seconds and a standard deviation of 40 seconds. The fitness association wants to recognize the fastest 10% of the boys with certificates of recognition. What time would the boys need to beat in order to earn a certificate of recognition from the fitness association? Right-click this file standard normal table and choose "open in new tab" or "open in new window" to view the table.