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Given are five observations collected in a regression study on two variables.

x₁	2	6	9	13	20
y₁	7	18	9	26	23

1. What percentage of the total sum of squares can be accounted for by the estimated regression equation? Answer_____%

2. What is the value of the sample correlation coefficient (to three decimals)? Answer __________.

3. What is the value of the standard error of the estimate (to four decimals) ? Answer _________.

4. Test for a significant relationship using the t test. Use ? = .05. t = Answer (to two decimals) _________.

5. Use the F test to test for a significant relationship. Use ? = .05 F = Answer (to two decimals) _________.

6. Develop the 95% confidence interval when x = 12 (to two decimals) __________ to ___________.

7. Develop the prediction interval when x = 12 (to two decimals) __________ to ____________.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91001118

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