Criterion -Related Validity is often encountered when aptitude tests are given t

Criterion
-Related Validity is often encountered when aptitude tests are given to predict
the degree of success in a course in a job etc. On page 80 in the text an
algebraic relationship is given between the results on an Algebra Aptitude Test
and the grade(degree of success) in an Algebra class. LettingXrepresent
the score on the Aptitude Test and G
represent the grade in the Algebra course the relationship is
G = (.75)(X) + 55(a) If a
student has a score of X = 45 on the
Aptitude Test what is the predicted grade for the Algebra course?(b)
Suppose that the passing grade in the Algebra course is 70. If a student with a
score of 15 on the Aptitude test asks you if you think they will pass Algebra
what would you tell them? Give your reasons.