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Inferences Based on Single Sample

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An article in the Annals of the Association of American Geographers (June 1992) revealed that only 133 of 337 randomly selected residences in Los Angeles County were protected by earthquake insurance.

-What are the appropriate null and alternative hypotheses to test the research hypothesis that less than 40% of the residents of Los Angeles County were protected by earthquake insurance?

-Do the data provide sufficient evidence to support the research hypothesis, using alpha=0.10

-Calculate the p-value for the test.

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The solution is attached in Word as a 186 explanation of how to calculate a p-value and decide if evidence sufficiently supports a hypothesis.

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a. What are the appropriate null and alternative hypotheses to test the research hypothesis that less than 40% of the residents of Los Angeles County were protected by earthquake insurance?

In this problem we want to determine if less than 40% of the ...

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