SAT, 19.11.2020 02:10 kkeith121p6ujlt
To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette has recently been marketed. The FDA tests on this cigarette yielded mean nicotine content 28.2of milligrams and a standard deviation of 2.7milligrams for a sample of 9 cigarettes. Construct a 98% confidence interval for the mean nicotine content of this brand of cigarette.
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To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes...
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