- #1

- 39

- 0

## Homework Statement

In the year 2010 a profit of book in x dollars follows the distribution which density function is f(x) = cx

^{-3}. There were 96 books in that year which profit exceeded 10

^{5}$. Estimate how many books profit over 2*10

^{5}?

## Homework Equations

For cumulative distribution function F(x) = [itex]\int f(x)[/itex]

## The Attempt at a Solution

I don't what to do. I tried to define c but I failed. I don't want direct answer but just some guidelines which help me to get started.

-Mixer-