SOLUTION: `I'm having a hard time understanding how to compute this question. I'm just starting my summer school class and my teacher is absolutely HORRID! It's his first time ever teaching

Question 878489: `I'm having a hard time understanding how to compute this question. I'm just starting my summer school class and my teacher is absolutely HORRID! It's his first time ever teaching and he doesn't speak english well!
My question is how do I solve this question?
Question:
The class average on a statistics test is 66 marks with a standard deviation of 8 marks. What minimum mark must a student obtain to be in the top 12% of the class?
For full marks your answer should be accurate to at least one decimal place.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
z = invNorm(.88) = 1.175
1.175 = (X-66)/8
8(1.175) + 66 = X
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