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  3. 3) as part of your work for an environmental aware

3) As part of your work for an environmental awareness group, you want to test the...

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Statistics

3) As part of your work for an environmental awareness group,you want to test the claim that the mean amount of lead in the airin U.S. cities is less than 0.036 microgram per cubic meter. Youfind that the mean amount of lead in the air for a random sample of56 U.S. cities is 0.039 microgram per cubic meter with a standarddeviation of 0.069 microgram per cubic meter. At α = 0.01 what canbe concluded about the claim?

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