Amounts of nicotine in a certain brand of cigarette

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The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.916 g and a standard deviation of 0.315 g. The company that produces these cigarettes claims that it has now reduced the amount of nicotine. In what range would you expect to find the middle 60% of amounts of nicotine in these cigarettes (assuming the mean has not changed)?

Between____ and____ . (Enter your answers in ascending order...smaller on left, larger on right. Also, enter your answers accurate to four decimal places.)

If you were to draw samples of size 56 from this population, in what range would you expect to find the middle 60% of most average amounts of nicotine in the cigarettes in the sample?

Between____  and _____. (Enter your answers in ascending order...smaller on left, larger on right. Also, enter your answers accurate to four decimal places.)

Reference no: EM131870852

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