1. 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...

Extracted text: 1. 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 a mean nicotine content of 26.8 milligrams and standard deviation of 2.4 milligrams for a sample of 1 = 81 cigarettes. Find a 95% confidence interval for µ.