Question

Use the following dataset and answer the following questions.

x	6	15	9	21	20	18
y	16	25	20	35	40	29

Please do problems (b), and (c) BY HAND. You may use your calculator.
a) The following scatter diagram has been taken from Minitab for the above data.

What does the above scatter diagram indicate about the relationship between the two variables?

b) Find the intercept of the estimated regression equation (b0).

c) Find the slope of the estimated regression equation (b1).

d) Develop the least squares estimated regression equation in the form of

?̂ = ? 0 + ? 1 ?

e) Use the estimated regression equation from part (d) to predict the value of ? when ? = 12.

Answer 1