[Solution] Natural Gas Heat. The Energy Information Administration reported that 51.7% of homes in the United States were heated by natural gas. A random
Question: Natural Gas Heat. The Energy Information Administration reported that 51.7% of homes in the United States were heated by natural gas. A random sample of 200 homes found that 115 were heated by natural gas. Does the evidence support the claim, or has the percentage changed? Use a = 0.05 and the P-value method. What could be different if the sample were taken in a different geographic area?
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Hypothesis Testing: How to Determine the Null and Alternative Hypotheses? - MathCracker.com