SOLUTION: At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of .9 seconds. The times are very closely approximated by a normal cu

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Question 166312: At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of .9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are: greater than 16.1 seconds.
Answer by stanbon(48568) About Me  (Show Source):
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At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of .9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are: greater than 16.1 seconds.
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z(16.1) = (16.1-15.2)/0.9 = 1
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P(x>16.1)= P(z>1) = 0.1587.. = 15.87%
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Cheers,
Stan H.