Mathematics, 06.07.2020 22:01 milkshakegrande101
The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.933g and a standard deviation of 0.301g. The company that produces these cigarettes claims that it has now reduced the amount of nicotine. The supporting evidence consists of a sample of 43 cigarettes with a mean nicotine amount of 0.869g. Assuming that the given mean and standard deviation have not changed, find the probability of randomly selecting 43 cigarettes with a mean of 0.869g or less P(M<0.869g)
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