SOLUTION: Given that SAT scores have a normal distribution with mean 500 and standard deviation 100, find the probability that the score of a randomly selected student is between 400 and 650

Question 934995: Given that SAT scores have a normal distribution with mean 500 and standard deviation 100, find the probability that the score of a randomly selected student is between 400 and 650.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
the probability that the score of a randomly selected student is between 400 and 650.
mean 500 and standard deviation 100,
.....
P(400 < x < 650) = P(-100/100 < z < 150/100) = normalcdf(-1,1.5) = .7745
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