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In the past decades, there have been intensive antismoking campaigns sponsored by both federal and private agencies. In one study of national smoking trends, two

In the past decades, there have been intensive antismoking campaigns sponsored by both federal and private agencies. In one study of national smoking trends, two random samples of U.S. adults were selected in different years. The first sample, taken in 1995, involved 4276 adults, of which 1642 were smokers. The second sample, taken in 2010, involved 3908 adults, of which 1415 were smokers. The samples are to be compared to determine whether the proportion of U.S. adults that smokes declined during the 15-year period between the samples. Let p1 be the proportion of all U.S. adults that smoked in 1995. Let p2 denote the proportion of all U.S. adults that smoked in 2010. The P-value of the test for equality of the proportion of smokers in 1995 and 2010 is:

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