7.2 Experimental and Theoretical Probability.notebook

7.2 Experimental and Theoretical Probability.notebook
February 28, 2014
Theoretical & Experimental Probability
Bellwork: 2/24/14
Write each fraction as a percent.
We will...
Find the theorecal probability of an event.
1)
3)
2)
Evaluate: 5) 7P2
6)
100
4)
Find the experimental probability of an event.
C5
Feb 19­12:25 PM
Feb 19­12:35 PM
Probability
outcome
sample space
event
Feb 19­12:35 PM
Feb 19­12:38 PM
Probabilities are written as fractions or decimals from 0 to 1, or as percents from 0% to 100%.
Feb 24­10:03 AM
Feb 19­12:35 PM
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7.2 Experimental and Theoretical Probability.notebook
February 28, 2014
Equally likely outcomes theoretical probability Feb 24­10:25 AM
Each letter of the word PROBABLE is written on a separate card. The cards are placed face down and mixed up. What is the probability that a randomly selected card has a consonant?
Feb 19­12:35 PM
A red number cube and a blue number cube are rolled. If all numbers are equally likely, what is the probability of the event?
The sum is 6
The difference is 6.
Two number cubes are rolled. What is the probability that the difference between the two numbers is 4? (different
The red cube is greater.
cubes)
Feb 19­12:35 PM
Feb 19­12:35 PM
Feb 19­12:35 PM
Feb 24­10:28 AM
complement
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7.2 Experimental and Theoretical Probability.notebook
There are 25 students in study hall. The table shows the number of students who are studying a foreign language. What is the probability that a randomly selected student is not studying a foreign language?
Feb 19­12:35 PM
Each student receives a 5­digit locker combination. What is the probability of receiving a combination with all odd digits?
February 28, 2014
Two integers from 1 to 10 are randomly selected. The same number may be chosen twice. What is the probability that both numbers are less than 9?
Feb 19­12:50 PM
Geometric probability A DJ randomly selects 2 of 8 ads to play before her show. Two of the ads are by a local retailer. What is the probability that she will play both of the retailer’s ads before her show?
Feb 19­12:50 PM
A figure is created placing a rectangle inside a triangle inside a square as shown. If a point inside the figure is chosen at random, what is the probability that the point is inside the shaded region? Feb 19­12:50 PM
Feb 19­12:50 PM
Find the probability that a point chosen at random inside the large triangle is in the small triangle.
Feb 19­12:53 PM
3
7.2 Experimental and Theoretical Probability.notebook
February 28, 2014
experiment
The table shows the results of a spinner experiment. Find the experimental probability.
trial
spinning a 4
spinning a number greater than 2
experimental probability Feb 19­12:54 PM
Feb 19­12:55 PM
The table shows the results of choosing one card from a deck of cards, recording the suit, and then replacing the card.
Find the experimental probability of choosing a diamond.
Find the experimental probability of choosing a card that is not a club.
Feb 19­12:55 PM
4