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15-12: Consider the following regression model:                       y=β0+β1x1+β2x2+ε where:         &

15-12: Consider the following regression model:

                      y=β0+β1x1+β2x2+ε

where:

            x1=A quantitative variable

            x2=1 if x1<20

                 0 if x1>20

The following estimate regression equation was obtained from a sample of 30 observations:

            y^=24.1+5.8x1+7.9x2

  1. Provide the estimate regression equation for instances in which x1<20.
  2. Determine the value of y^ when x1=10.
  3. Provide the estimate regression equation for instances in which x1>20.
  4. Determine the value of y^ when x1=30.

please not handwritten so I can read it

Math   Statistics-And-Probability   
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