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Historically, the proportion of adults

Historically, the proportion of adults over the age of 24 who smoke has been estimated to be .30. You want to take a sample to
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2. Assume that the population proportion of adults having a college degree is 0.35. A random sample of 200 adults is to be
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Thirty-six percent of the adults in a town are believed to own a dog. Of 50 adults who were asked if they own a dog, 22 said
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In a poll of 1,004 adults, 93% indicated that restaurants and bars should refuse service to patrons who have had too much to
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A Today/CNN/Gallup Poll of 1015 adults found that 13% approved of the job Congress was doing in 1995. Find the 95% confidence
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A nationwide study indicated that 27% of adults said that chocolate was their favorite ice cream flavor. A simple random sample
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A pollster wants to construct an 80% confidence interval for the proportion of adults who believe that economic conditions are
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A pollster wants to construct an 98% confidence interval for the proportion of adults who believe that economic conditions are
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Suppose the weekly use of gasoline for motor travel by adults in North America is approximately normally distributed, with a
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Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our
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