### Simple random samples

Always start each new problem from the home screen

Many times you will need to choose a random sample from
a population. You can of course use the random number tables found at the back
of the book or let the calculator "choose" for you.

Say we want to randomly select 5 people from a class of
20 for a particular study project. First we assign the numbers 1 - 20 to the people
in the class. Next we go to the Probability menu on the calculator.

Press
**Arrow left** to " **PRB ". **Highlight
** "5 : randInt " **

Press

Now you **must** enter these numbers in this order **(
smallest number , largest number , sample size )**

For our problem we will enter** **

Five numbers will be displayed inside set braces . These
are the **5** randomly selected people for our study group.

My group will be persons numbered **{ 4 8 3 5 18 } .**

*Of course your 5 numbers will most likely be different.*