Originally Posted by

**QuikLerner** I'm trying to figure out the probability that Set A will be higher than set B.

Set A has an Average of 40 and a standard deviation of 5.

Set B has an Average of 44 and a standard deviation of 6.

I thought I would solve for X to figure out how many standard deviations it would take for them to meet, but that doesn't seem to work. To do this I did:

40 + 5x = 44 + 6x & 40 -5x = 44 -6x

which results in:

x = -4 & x = -4

I suppose I could present a little scenario to illustrate what I am trying to accomplish.

Suppose Person A's average exam grade = 40 with an SD of 5.

and that Person B's average exam grade = 44 with an SD of 6.

What is the probability of person A scoring higher than person B on the next exam.

I'm not sure if this problem is even possible. Any help would be greatly appreciated.