A z score of -1.50 indicates that the raw score is
a. one and one-half percentage points below the mean
b. one and one-half standard deviation units below the mean
c. one and one-half raw score units below the mean
d. negative
Question 2
The design used in a study of the success of a certain training program in which participants were measured before, immediately after, and three months after completing the program is an example of a(n) __________ design.
Fill in the blanks with correct word