Question 1085348: How do you find the exact probability? And what are the steps in using the formula?
Answer by addingup(3677)   (Show Source):
You can put this solution on YOUR website! The probability of an event: number of favorable outcomes/total possible outcomes
------------------------------
Step 1: List the outcomes of the experiment
Step 2: Count the number of possible outcomes
Step 3: Count the number of favorable outcomes
Step 4: Use the probability formula
-----------------------------------
Example:
Two fair dice are rolled at the same time. What's the probability that the sum of the numbers on the two dice is 6?
Possible outcomes:
{(1, 1), (1, 2),...............,(1, 6), (2, 1), (2, 2),................,(2, 6), (3, 1), (3, 2),...........,(3, 6), .............,(4, 1), (4, 2),..........,(4, 6), (5, 1), (5,2),...............,(5, 6), (6, 1), (6, 2),......................,(6, 6)} Total: 36 possible outcomes
Number of favorable outcomes (where the two dice add up to 6): 5
Apply formula: 5/36 = probability
|
|
|
