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a marketing research consultant hired by coca cola is interested in determining the proportion of customers who favor coke over other soft drinks. A random
a marketing research consultant hired by coca cola is interested in determining the proportion of customers who favor coke over other soft drinks. A random sample of 400 consumers was selected from the market under investigation and showed that 53% favored coca cola over other brands compute a 95% confidence interval for the true proportion of people who favor coke
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