An Economist Is Interested in Studying the Incomes of Consumers

question 34

Multiple Choice

An economist is interested in studying the incomes of consumers in a particular region.The population standard deviation is known to be $2,000.A random sample of 50 individuals resulted in an average income of $30,000.
-What is the upper end point in a 99% confidence interval for the average income?

• A) $30,282
• B) $30,1042
• C) $30,728
• D) $30,660

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abbreviation for "it is" or "it has."

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The past participle of "be," used in perfect tenses to indicate an action that occurred at an unspecified time before now.

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A contraction of "you are," often used in informal writing or speech.