# What is the variance of a probability distribution function of the form: #f(x)=ke^(-2x)#?

##### 1 Answer

Oct 27, 2015

The distribution is an exponential distribution. k = 2 and E (x) = 1/2 ,

E (

#### Explanation:

The limit of the distribution is (0,

E (x) = #int_0^Bx