Question 306291: Find the probabilities.
From National Weather Service records, the annual snowfall in the TopKick Mountains has a mean of 92 inches and a standard deviation s of 12 inches. If the snowfall from 25 randomly selected years are chosen, what it the probability that the snowfall would be less than 95 inches
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Find the probabilities.
From National Weather Service records, the annual snowfall in the TopKick Mountains has a mean of 92 inches and a standard deviation s of 12 inches. If the snowfall from 25 randomly selected years are chosen, what is the probability that the snowfall would be less than 95 inches.
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t(95) = (95-92)/[12/sqrt(25)] = 1.25
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P(x < 95) = P(t < 1.25 when df = 24) = tcdf(-100,1.25,24) = 0.8883
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Cheers,
Stan H.
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