Question

Let’s suppose we are predicting score on a training posttest from number of years of education and the score on an aptitude test given before training. Here is the regression equation Y = 25 + .5X_1 + 10X_2 where, X_1= years of education and X_2=aptitude test scores. What is the predicted score for someone with 10 years of education and an aptitude test score of 5?

Answer 1

Answer:

Option d is correct.

The regression equation is Y = 25 +...

Answer 2

The answer is 80.

Given:

$Y=25+.5X_1+10X_2$

Where Y is the predicted score

$X_1$ is years of education

$X_2$ is the aptitude test scores
To Find:
The predicted score for someone with 10 years of education and an aptitude test score of 5?

Solution:
We have been given 10 years of education.

Therefore

$X_1=10$

We also have been given an aptitude test score of 5.

Therefore

$X_2=5$

Putting these values in the equation we get

$Y=25+.5*10+10*5\\Y=25+5+50\\Y=80$

Hence the predicted test score is 80.

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