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5. Suppose our Confidence Interval is calculated as CI-72.75.55. Then the upper

ID: 2439780 • Letter: 5

Question

5. Suppose our Confidence Interval is calculated as CI-72.75.55. Then the upper confidence limit and the lower confidence limit would be 78.25 and 70.15 respectively: a. True b. False 6. Suppose our Prediction Interval is calculated as PI- 80.7 13.21. Then the upper prediction limit and the lower prediction limit would be..... a. 93.91 and 70.59 respectively; b. 93.91 and 67.49 respectively; c. 93.89 and 67.49 respectively d. 90.89 and 71.59 respectively 7. Th e least squares method is a mathematical procedure used to identify the linear equation that best fits a set of ordered pairs. a. True b. False

Explanation / Answer

The correct answer is: False

Reason: the upper confidence limit is 78.25 and the lower confidence limit is 67.15.

6. The correct answer is: b).

Reason: upper confidence limit = 80.7+13.21= 93.91

And , lower confidence limit = 80.7-13.21 = 67.49

7. The correct answer is: true

Reason: it is a best fit method to identify a linear relationship.

Thanks!

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