Consider the following sample data: Calculate b 1 and b 0 . What is the sample r

Question

Consider the following sample data:

Calculate b1 and b0. What is the sample regression equation? (Negative values should be indicated by a minus sign. Round intermediate calculations to 4 decimal places and final answers to 2 decimal places.)

Find the predicted value for y if x equals 27, 109 and 231. (Round intermediate coefficient values and final answers to 2 decimal places.)

x 27 22 25 25 24 11 14 12 y 107 137 242 86 86 10 13 29 Consider the following sample data: x 27 22 25 25 24 11 14 12 y 107 137 242 86 86 10 13 29 Click here for the Excel Data File b. Calculate b1 and b0. What is the sample regression equation? (Negative values should be indicated by a minus sign. Round intermediate calculations to 4 decimal places and final answers to 2 decimal places.) y-hat = + x c. Find the predicted value for y if x equals 27, 109 and 231. (Round intermediate coefficient values and final answers to 2 decimal places.) y-hat If x = 27 If x = 109 If x = 231

Explanation / Answer

(b) y=-85.05 + 8.69*x

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(c) If x = 27, -85.05 + 8.69*27 =149.58

If x = 109, -85.05 + 8.69*109=862.16

If x = 231, -85.05 + 8.69*231=1922.34

Regression output confidence interval variables coefficients std. error    t (df=6) p-value 95% lower 95% upper Intercept -85.0500 67.9861 -1.251 .2575 -251.4059 81.3059 x 8.6900 3.2504 2.674 .0369 0.7367 16.6433

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