For Test A, the mean was 13 and the standard deviation was 2.
For Test B, the mean was 12 and the standard deviation was 4.147288271.
For a score of 15 in Test A, what is the equivalent score in Test B? Why?
I got 11 using the Z score formula (by saying that since the Z score for Test A was 1 and the Z score for Test B was 0.723364233, the equivalent score could be simply worked out by multiplying 0.723364233 by 15). That doesn't seem right though.