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Lesson 3

1. Lesson 3

1.3. Explore 2

Mathematics 30-2 Module 2

Module 2: Probability

 

For independent events, you have seen that the probability of the second event is not influenced by the probability of the first. You will now investigate how to calculate the probability of two independent events.

 

Try This 2

 

Part A

 

You have a fair coin, a fair die, and a spinner.

 

This is a picture of a three-part spinner. One section is red and labelled R, another section is blue and labelled B, and the third section is white and labelled W. The spinner is pointing at W.This is a picture of a coin.This is a picture of a die.

  1. Given the experiments in the table, calculate each probability. The first row is completed for you as a guide.

    Experiment

    Event A

    P(A) =

    Event B

    P(B) =

    P(A) × P(B) =

    flipping a coin twice

    flipping a head

    flipping a tail

    flipping a coin and rolling a die

    flipping a head

     

    rolling a six

     

     

    spinning the spinner and flipping a coin

    spinning a red

     

    flipping a tail

     

     

course folder Save your responses in your course folder.

 

Part B

 

Use Exploring Probability—Explore It to check your answers in Part A. Use either the tree diagram or the chart to check the probabilities of the independent events in your table from Part A.

 

 
This is a play button for Exploring Probability—Explore It.


  1. After completing the table and checking your answers using the applet, describe in your own words how you would calculate the probabilities of two independent events.

course folder Save your responses in your course folder.