A physical fitness association is including the mile run in its secondary-school fitness test for boys. The time x 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 50 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? That is find xo such that P(x 5 X0 )=0.10, 386 seconds 514 seconds Q:455.77 seconds 444,23 seconds Question 6 1 pts The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute. Find the probability that a randomly selected college student will find a parking spot in the library parking lot in less than 3 minutes. 1915 3551 2674 3085