A random variable is gaussian with and .
a) What is the probability of |X| > 2?
So, I plugged the mean and variance into the gaussian and for this function I got
But I had trouble integrating the function.
and that's why I was asking about integrating
I know I can use the Emperical Rule for standard deviations, and so I know the answer is 5%, but I want to know how to do it through integration of the pdf.
Is this really to hard to do by hand?