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The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 9.7 mg and a standard deviation of 1.9

The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 9.7 mg and a standard deviation of 1.9 mg. Find the probability of randomly selecting a cigarette with 7.61 mg of nicotine or less. P(X

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