SOLUTION: Suppose ACT Mathematics scores are normally distributed with a mean of 20.8 and a standard deviation of 5.4. A university plans to admit students whose scores are in the top 30%.

Question 1026611: Suppose ACT Mathematics scores are normally distributed with a mean of 20.8 and a standard deviation of 5.4. A university plans to admit students whose scores are in the top 30%. What is the minimum score required for admission?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z from (-oo,+0.525)=0.700.
Therefore, any score greater than 0.525 sd from the mean will be acceptable.
20.8+5.4(0.525)=20.8+2.835=23.64 would be the minimum.
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