Studies indicate that about 10 percent of polar bears weigh more than 1,000 pounds. A biologist studying the bears thinks that percent might be too high. From a random sample of polar bears, the biologist found only 8 percent of the sample weighing over 1,000 pounds. Which of the following is the most appropriate method for the biologist’s study? (A) A one-sample -test for a sample proportion (B) A one-sample -test for a population proportion (C) A one-sample -test for a difference in population proportions (D) A two-sample -test for a difference in sample proportions (E) A two-sample -test for a difference in population proportions

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A:

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