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 of 24.3 milligrams and standard deviation of 2.1 milligrams for a sample of 9 cigarettes. Construct a 99% confidence interval for the mean nicotine content of this brand of cigarette. Right-click the links to use thist-tableor thisExcel file.

24.32.491

24.32.349

24.32.413

24.32.275