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Question
Let p1 represent the population proportion of U.S. senatorial and congressional (House of Representatives) Democrats who are in favor of a new modest tax on junk food. Let p2 represent the population proportion of U.S. senatorial and congressional Republicans who are in favor of a new modest tax on junk food. Out of the 265 Democratic senators and members of Congress, 106 of them are in favor of a junk food tax. Out of the 285 Republican senators and members of Congress, only 57 are in favor a junk food tax. At 
= .01, can we conclude that the proportion of Democrats who favor a junk food tax is more than 5 percent higher than the proportion of Republicans who favor the new tax (using critical value rules)?
Answer
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