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ProbabilityQ&A LibraryA recent study by the EPA has determined that the amount of contaminants in Minnesota lakes (in parts per million) is normally distributed with mean 64 ppm and variance 17.6. Suppose 35 lakes are randomly selected and sampled. What is the probability that the sample average amount of contaminants is between 64 and 72 ppm?Start your trial now! First week only $4.99!*arrow_forward*

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A recent study by the EPA has determined that the amount of contaminants in Minnesota lakes (in parts per million) is normally distributed with mean 64 ppm and variance 17.6. Suppose 35 lakes are randomly selected and sampled. What is the probability that the sample average amount of contaminants is between 64 and 72 ppm?

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