1) 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 40 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 300 seconds.
1) 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 40 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 300 seconds.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:1) 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 40 seconds. Find the probability that a randomly selected
boy in secondary school can run the mile in less than 300 seconds.
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