SOLUTION: The SAT scores of students are normally distributed with a mean of 950 and a standard deviation of 200. If John Smith score was 1090 what percentage of the students have a higher
Algebra ->
Probability-and-statistics
-> SOLUTION: The SAT scores of students are normally distributed with a mean of 950 and a standard deviation of 200. If John Smith score was 1090 what percentage of the students have a higher
Log On
Question 1104708: The SAT scores of students are normally distributed with a mean of 950 and a standard deviation of 200. If John Smith score was 1090 what percentage of the students have a higher score than John? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! need a z-score, z=(x-mean)/sd or (1090-950)/200=140/200 so a z-score greater than +0.7
24.2% had a score higher.
