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1. A sociologist intends to estimate the percentage of adults who believe in astrology. How many adults does the sociologist need to survey if a

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1. A sociologist intends to estimate the percentage of adults who believe in astrology. How many adults does the sociologist need to survey if a condence level of 99% and a margin error of 4% are desired a) if nothing is known about the percentage to be estimated. b) if a recent survey shows 16% of respondents say they believe in astrology

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