Translate

Tuesday, September 15, 2015

9/15 Lessons 1.2.7 & 1.2.8 Compound Probability

1.  Warm-up:  Decide whether each situation represents experimental or theoretical probability.  Explain your choice.


  • A weather forecaster predicts there will be a 30% chance of rain today
  • To determine the probability of landing on red, Susan spins the spinner 50 times
  • Mike notices there are 5 red marbles, 3 green, and 2 blue.  He determines there is a 20% chance of selecting a blue marble.
  • Tomiko keeps a detailed weather journal.  Last year, it rained once in September; therefore, she has determined that there is a 1 out of 30 chance of rain today.


2.  Having trouble accessing the eBook?  You can still access the Review/Preview and Homework Help without signing in.  Go to Mr. Robinett's website and click on the "eBook and Resources" tab.

3.  Begin Lesson 1.2.7 and 1.2.8 (instructions in GC)

  • Lesson Objective:  I will develop a strategy for solving problems involving compound probability (either A or B happening).


4.  Closure:  How can we write the probability of A or B as a single fraction?

Homework:  Lesson 1.2.7 R/P #124-125 and Lesson 1.2.8 R/P #138, 140-141