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(Solution Download) Recompute the regression fits from Probs. (a) 17.3, and (b) 17.17, using the matrix approach....

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Recompute the regression fits from Probs. (a) 17.3, and (b) 17.17, using the matrix approach. Estimate the standard errors and develop 90% confidence intervals for the coefficients.

Problem:

1. Use least-squares regression to fit a straight line to

x

0

2

4

6

9

11

12

15

17

19

y

5

6

7

6

9

8

7

10

12

12

Along with the slope and intercept

2. Fit a cubic equation to the following data:

x

3

4

5

7

8

9

11

12

y

1.6

3.6

4.4

3.4

2.2

2.8

3.8

4.6

Along with the coefficients

 







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This question was answered on: Oct 24, 2017

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