Question

Gregorio took two tests. Find his z-score for each test. (Remember: The number of standard deviations between a score and the mean score is indicated by a z-score.) On which did he score better compared with others in his class?

Test A

Test B
Gregorio’s score

62

70
Mean score

80

90
Standard deviation

6

10

a.

Test A: 3; Test B: 2; Test A

c.

Test A: –2; Test B: –3; Test A
b.

Test A: –3; Test B: –2; Test B

d.

Test A: –3; Test B: –2; Test A