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A biologist wished to determine whether monarchs have

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Unformatted text preview: nown how they locate their winter homes. One possibility is that they possess some magnetic material that could be utilized in a magnetic field. A biologist wished to determine whether monarchs have some magnetic material in their bodies, using extremely sensitive magnetometers. Unfortunately the magnetometer itself creates some background magnetism, about 200 pico ­emus of magnetic intensity. (A pico ­emu is 10−12 electromagnetic units.) In order to demonstrate that monarchs have some magnetic material in their bodies, it must be shown that their mean magnetic intensity exceeds 200 pico ­emus naturally. For this test we will use a 5% level of significance. Step 1: Determine the Hypotheses The null hypothesis states that the population mean is equal to a specific value: !! :µ = ! The alternative hypothesis is one of the following inequ...
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