SOLUTION: The class average on a statistics test is 70 marks with a standard deviation of 12 marks. What minimum mark must a student obtain to be in the top 8% of the class? For full marks

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Question 878775: The class average on a statistics test is 70 marks with a standard deviation of 12 marks. What minimum mark must a student obtain to be in the top 8% of the class?
For full marks your answer should be accurate to at least one decimal place.
The Top 8.0% Minimum Mark =

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi



mean = 70, SD = 12

z = invNorm(.92) = 1.4051



Note:  z = 1.4051 = (X-70)/12

1.4051*12 + 70 = X