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A physical fitness association is including the mile run in its secondary-school fitness test. The time...

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 440 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?

a

504 sec
b

522.25 sec
c

357.75 sec
d

376 sec
Math   Statistics-And-Probability   
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