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 32.4 milligrams and standard deviation of 6.9 milligrams for a sample of 12 cigarettes. Use this information to give a point estimate for the mean and to construct an 79% confidence interval for the mean nicotine content of this brand of cigarette. Assume the amount of nicotine found in this brand of cigarettes is normally distributed.
In the blank below, give the point estimate for the mean. In the following questions, you will be asked for the lower and upper bound of the confidence interval.
The estimate for the mean is