Studying the incomes of consumers in a particular region

Reference no: EM13101407

An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is know to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What sample size would the economist need to use if he wants a 95% confidence interval no wider than plus or minus $100

Reference no: EM13101407

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