SOLUTION: Suppose the scores for a certain test follow a normal distribution with a mean of 78 and a standard deviation of 6. The instructor is going to give the top 10% of scores an A. Wh

Question 1054201: Suppose the scores for a certain test follow a normal distribution with a mean of 78 and a standard deviation of 6. The instructor is going to give the top 10% of scores an A. What will be the lowest score that receives an A? (Assume the scores are all integers).

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the z score for .
So then,

So then rounding up, an A would be an 86.

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