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Example 144


Example 144 In 1995, the American Cancer Society randomly sampled 1500 adults of which 555 smoked.  In 2005, they surveyed 1750 adults and found that 578 of them smoked.  At the 5% level of significance test the claim that the proportion of smokers in the population decreased over the ten year period.  What is the p-value for the test?


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