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In 1965 about 44 of the us popuation had never smoked a

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In 1965, about 44% of the US popuation had never smoked a cigarette. A nation survey of 1205 US adults during 2006 revealed that 615 had never smoked. Suppost a 95% confidence interval is (0.48215, 0.5386). Can we conclude from the confidence interval that the proportion of US adults that has never smoked has changed since 1965? how can you tell?

Reference no: EM13622575

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