Statistics: Z-test: Testing hypotheses – #151


Question: The U.S. Fish and Wildlife Service’s report on the bass population in the North American lakes indicated average weight of the fish to be 3.0 lb. and a standard deviation of .30 lb. Furthermore, 50% of all bass were females. The State of Florida conducted an independent study and reported the average weight of their bass was 3.2 lb. Additionally, the report indicated that 58% of bass population were females. (This report was based on a small sample of 121). Test the hypothesis that Florida’s bass female proportion differs from the national proportion. Use a=.05 to state your conclusion.

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