I am having trouble with this problem.... X is normally distributed with mean 100 and standard deviation 20. What is probability that X is greater than 145?
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$\displaystyle N(100,400) : \frac{1}{20 \sqrt{2\pi}}e^{-\frac{(x-100)^2}{800}}$ Integrate from 145 to $\displaystyle \infty$
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