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content area top Part 1 A researcher wishes to estimate, with 95% confidence, the population proportion of motor vehicle fatalities that were caused by alcohol-impaired

content area top Part 1 A researcher wishes to estimate, with 95% confidence, the population proportion of motor vehicle fatalities that were caused by alcohol-impaired driving. His estimate must be accurate within 4% of the population proportion. What is the minimum sample size needed assuming that no prior information is available

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