Confidence interval for the mean of the population


The monthly incomes from a random sample of faculty at a university are shown below.

Monthly Income ($1000s)

3.0

4.0

6.0

3.0

5.0

5.0

6.0

8.0

Compute a 90% confidence interval for the mean of the population. The population of all faculty incomes is known to be normally distributed. Give your answer in dollars.

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Business Management: Confidence interval for the mean of the population
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