Question
The Energy Information Administration reported that51.7%of homes in the United States were heated by natural gas. A random sample of212homes found that115were heated by natural
The Energy Information Administration reported that51.7%of homes in the United States were heated by natural gas. A random sample of212homes found that115were heated by natural gas. Does the evidence support the claim, or has the percentage changed? Use = 0.01and theP-value method.
(a) State the hypotheses and identify the claim with the correct hypothesis.
H0 : p ____ 0.517
H1 : p ____ 0.517
Which above is the claim?
This hypothesis test is a_____- tailed test.
(b) Compute the test value. Round the sample proportion to three decimal places andzscore value to two decimal places.
(c) Find theP-value. Round the answer to four decimal places.
(d) Make the decision.
_____the null hypothesis.
(e) Summarize the results.
There_______enough evidence to reject the claim that51.7%of homes in the United States were heated by natural gas.
(f) Would the percentage of homes heated by natural gas change, if the sample were taken in a different geographic area?
______, the percentage of homes heated by natural gas________change, if the sample were taken in a different geographic area.
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