SOLUTION: The average score of 100 students taking a statistics final was 70 with a standard deviation of 7. Assuming a normal distribution, what is the probability that a student scored 90

Question 830972: The average score of 100 students taking a statistics final was 70 with a standard deviation of 7. Assuming a normal distribution, what is the probability that a student scored 90 or higher
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the z score.

So 99.7863% of students scored 90 or less, leaving
P(>90)=
P(>90)=
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