Let X denote a continous random variable with probability density function f(x) = kx3/15 for 1≤X≤2. Determine the value of the constant k.
I'm not sure if this is right but I think ∫kx3/15 dx=1 with the parameters being between 2 and 1,
The Attempt at a Solution
So I did what I i showed in the relevant equations section. I got k = 4. When I plug 2 into the equation for X, my probability is greater than 1 so I know this isn't right. I'm not sure what else to do.