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An Economist Is Interested in Studying the Incomes of Consumers

Question 132

Multiple Choice

An economist is interested in studying the incomes of consumers in a country.The population standard deviation is known to be $1,000.A random sample of 50 individuals resulted in a mean income of $15,000.What is the width of the 90% confidence interval?


A) $232.60
B) $364.30
C) $465.23
D) $728.60

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