# Math Help - Random Variable Expectation

1. ## Random Variable Expectation

The proportion of impurities X in a certain copper ore sample is a random variable having probably density function
f(x) = 12x^2(1-x) 0<=x<=1

To find the expectation, do I just integrate xf(x) from 0 to 1?

2. Originally Posted by SterlingM

To find the expectation, do I just integrate xf(x) from 0 to 1?