You conduct a study of employee stress levels within your o

- You conduct a study of employee stress levels within your organization finding these scores: 3.16, 2.12, 5.12, 3.21, 1.11, 4.32, 4.87, 3.79. The test manual you received when ordering the stress survey says that, on average, scores on this test vary by 1.25. Identify the appropriate confidence interval for the mean.

- In an examination of your sales numbers, you find that mean monthly sales for your store over the past 18 months was $12000. On average, sales each month varied from this mean by $3000. What’s the margin of error for your monthly sales estimate?

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