Question

Can you help in question number 2 ( answer&explain )

Answer 1

Given the regression equation:

`\hat{y}=31.6+10.9x`

• x=number of years of study

,

• y=grade on the test

Part A

The predictor variable (also called the independent variable) in the equation is x, the number of years of study.

The response variable (or the dependent variable) is y, the grade that they received on the test.

Part B

In the regression equation:

`\hat{y}=31.6+10.9x`

• y-intercept = 31.6

,

• Slope = 10.9

Interpretation:

• An applicant who has studied German for 0 years (,not studied German at all,) will score an average of 31.6 on the test.

,

• For each extra year of German studied, the grade of the applicant increases by 10.9.