Question

A data set yielded the following regression line: y = 6.5 -0.75 x. (a) Is the data point ( 4 , 3.2) above or below the regression line? below the line (b) If X increases by 6, by how much and in what direction would you expect Y to change? We expect Y to decrease by 6 X (c) If X = 3, what is your prediction for Y? 4.25 (d) If you want Y to equal 5.6, and you can control the level of X (by turning a knob), at what level should you set X ? 1.2

Answer 1

From the given information,

There is one cross mark for wrong answer.

By using calculator,

The required correct answer in red cross box is,

Correct answer= 0.75*6 = 4.5

Please help me out by just rating the answer.

Thank you so much.