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A ten year old survey found that the average income of sole proprietor CPA's was $74,914. To update this information, a new survey of 112 proprietor CPA's was taken and it showed a mean of $74,695. Use a 5% level of significance to test whether the average income sole proprietor CPA's has increased. assume a population standard deviation of $14.530. Report the value. What is is your conclusion?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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