1. Suppose that we will randomly select a sample of four measurements from a larger population of measurements. The sampling distribution of the sample mean is the probability distribution of a population. In your own words, describe the units in this pop

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Due date is April 10, 2015 at 5:00pm eastern time.

Required Text

 Business Statistics in Practice, 7/e

By Bruce L. Bowerman, Richard T. O'Connell and Emily S. Murphree

7th Edition ISBN: 978-0-07-352149-7

 

1. Suppose that we will randomly select a sample of four measurements from a larger population of measurements. The sampling distribution of the sample mean is the probability distribution of a population. In your own words, describe the units in this population.
2. Explain what is meant by a margin of error for a confidence interval.
3. Why do we need to take a preliminary sample when determining the size of the sample needed to make the margin of error of a confidence interval equal to E?

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