SOLUTION: A national achievement test has a normal distribution, a mean of 1000, and a standard deviation of 100. What percent, to the nearest whole percent, of the students taking the te

Question 306856: A national achievement test has a normal distribution, a mean of 1000, and a standard deviation of 100.
What percent, to the nearest whole percent, of the students taking the test scored above 800?

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

At , the area under the normal distribution curve is .
That means that 2.275% scored 800 or below.
The total area under the curve equals 1.
So subtract the value for from to get the % that scored over 800.

To the nearest percent 98% of students scored over 800.
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