Math Is Fun Forum

MathNewbie22

Member

Registered: 2013-04-22

Posts: 4

Uniform distribution

Suppose you sample 1 value from a uniform distribution with a = 0, b = 20.
What is the probability that the value will be between 13 & 19?

Can someone also please explain this? I'm having a lot of trouble with this probability chapter atm..
Any help would be much appreciated..

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Uniform distribution

hi MathNewbie22,

Welcome to the forum.

The graph below shows the pdf for a uniform distribution running from 0 to 20.

The area under the graph must be 1, so the y coordinate for the density is 1/20 = 0.05

You want the area shaded.

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob