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