SOLUTION: In Science, the mean is 60 and the standard deviation is 15. What percent of students scored a mark above 90 in science?
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Question 1105831: In Science, the mean is 60 and the standard deviation is 15. What percent of students scored a mark above 90 in science?
How do you do this question? Thanks Answer by Fombitz(32388) (Show Source):
You can put this solution on YOUR website! Assume a normal distribution.
Find the z score.
Find the probability for this will give you the probability for scores less than or equal to 90.
Subtract from 1 to find the complement or scores above 90.
So then,
