Mathematics, 26.06.2021 05:00, roadrnr5183
The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.974 g and a standard deviation of 0.325 g. The company that produces these cigarettes claims that it has now reduced the amount of nicotine. The supporting evidence consists of a sample of 48 cigarettes with a mean nicotine amount of 0.918 g. Assuming that the given mean and standard deviation have NOT changed, find the probability of randomly seleting 32 cigarettes with a mean of 0.917 g or less. P(M < 0.917 g) =
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The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.97...
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