# Math Help - Continuous Probability Distributions

1. ## Continuous Probability Distributions

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?

2. $N(100,400) : \frac{1}{20 \sqrt{2\pi}}e^{-\frac{(x-100)^2}{800}}$ Integrate from 145 to $\infty$