Lane Chap. 14

1. The formula for a regression equation is Y 2X 9.

a. What would be the predicted score for a person scoring 6 on X?

The predicted score for that person would be,

Y 2*69 21

b. If someones predicted score was 14, what was this persons score on X?

In this case Y 14 thus,

14 2X9

 X  (14-9)/2  2.5

Thus the score on X was 2.5.

1. For the X, Y data below, compute:

a. r and determine if it is signicantly different from zero.

The obtained output from Minitab is given below,

Correlation: X, Y

Pearson correlation of X and Y

P-Value

From the above output we can see that the correlation coefficient between X and Y is with

corresponding P value . As the P value is smaller than the significance level of ...