SOLUTION: the mean daily training distance covered by marathon runners is 10.6 miles with a standard deviation of 2.5 miles. if the sample of 35 marathon runners is selected, what is the pro

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Question 249288: the mean daily training distance covered by marathon runners is 10.6 miles with a standard deviation of 2.5 miles. if the sample of 35 marathon runners is selected, what is the probability that the mean training distance is grater then 10 miles?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
the mean daily training distance covered by marathon runners is 10.6 miles with a standard deviation of 2.5 miles.
if the sample of 35 marathon runners is selected, what is the probability that the mean training distance is grater then 10 miles?
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Find the z-value of 10:
z(10) = (10-10.6)/2.5 = -0.24
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P(x>10) = P(z>-0.24) = 0.5948..
Cheers,
Stan H.