SOLUTION: The distribution of actual weights of 8oz. wedges of cheddar cheese produced by a certain company is normal with mean 8.1 ounces and standard deviation 0.1 ounces. If a sample of f
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Question 525315: The distribution of actual weights of 8oz. wedges of cheddar cheese produced by a certain company is normal with mean 8.1 ounces and standard deviation 0.1 ounces. If a sample of five of these cheese wedges is selected. What is the probability that their average weight is less than 8oz? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The distribution of actual weights of 8oz. wedges of cheddar cheese produced by a certain company is normal with mean 8.1 ounces and standard deviation 0.1 ounces. If a sample of five of these cheese wedges is selected. What is the probability that their average weight is less than 8oz?
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t(8) = (8-8.1)/[0.1/sqrt(5)] = -2.2361
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P(x < 8) = P(t < -2.2361 when df = 4) = tcdf(-100,-2.2361,4) = 0.0445
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Cheers,
Stan H.
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