To Help Consumers Assess the Risks They Are Taking, the Food

question 85

Essay

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 24.5 milligrams and standard deviation of 2.3 milligrams for a sample of n = 82 cigarettes. Find a 95% confidence interval for μ.

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Definitions:

Radiometric Dating

Method of estimating the age of a rock or fossil by measuring the content and proportions of a radioisotope and its daughter elements.

Volcanic Rocks

Igneous rocks that are formed from the solidification of lava or magma ejected from volcanoes.

Sedimentary Rock

A type of rock formed by the accumulation and consolidation of mineral and organic particles, precipitated from solution, or deposited as insoluble residue.

Biogeography

The study of the distribution of species and ecosystems in geographic space and through geological time, influenced by environmental factors and ecological processes.