The mean of a set of credit scores is u=690 and o=14. Which credit score is within z-score of 3.3?
The mean of a set of credit scores is u=690 and o=14.
mean = 690 and standard deviation SD = 14
We use z- score formula
z= 3.3 given
Plug in the values and find out x
Multiply 14 on both sides
46.2 = x- 690
Now add 690 on both sides
Credit score is 720 that comes under 736.2
So answer is 720