# Probability Density Function(PDF) Question

• Jan 6th 2009, 02:49 PM
Pringles
Probability Density Function(PDF) Question
Consider the probability density function(pdf)

p(x)={3/4(1-x^2) if |x|< or = 1
0 otherwise

which random variable X follows.Find the probability that 0</=X</=1/2?

Will someone be kind enough to give me the full workings with explanation so I can study the solution for tomorrow's test.(Worried)
• Jan 6th 2009, 02:55 PM
Plato
Can you do the basic calculus?
$\int_0^{\frac{1}
{2}} {\frac{{3\left( {1 - x^{2} } \right)}}
{4}dx} = ?$