A magazine reported the mean annual household income of its readers to be $150,000 with a...
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A magazine reported the mean annual household income of itsreaders to be $150,000 with a standard deviation of $30,000. Arecent sample of 80 households from among those subscribing to thismagazine found a mean of $139,155. What is the upper bound of a 95%confidence interval for the mean income (correct to no decimalplaces)?
A magazine reported the mean annual household income of itsreaders to be $150,000 with a standard deviation of $30,000. Arecent sample of 80 households from among those subscribing to thismagazine found a mean of $139,155. What is the upper bound of a 95%confidence interval for the mean income (correct to no decimalplaces)?
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SOLUTIONFrom given dataA magazinereported the mean annual household income of its readers to be150000 with a standard
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