Probability Model Example

ColorProbability
Blue2/8 = .25
Gray1/8 = .125
Green3/8 = .375
Orange1/8 = .125
Red1/8 = .125
Totals8/8 = 1

This is a probability model because it satisfies both rules.

You have eight marbles: two blue, one gray, three green, one orange, and one red. The sample space for choosing one marble from the eight marbles is:

S = {blue, gray, green, orange, red}