Content Area: Math

 

Index: 4.4B Grade 8 CPI 2

 

Standard: 4.4 - Data Analysis, Probability, and Discrete Mathematics

 

Strand: B - Probability

 

Cumulative Progress Indicator: 2 - The student will determine probabilities of compound events.

 

Grade: 8

 

Sample Activities:

 

·        Students watch the long range weekend weather forecast and learn that the probability of rain is 40% on Saturday and 50% on Sunday. They determine that the probability that it will rain on both days is 20% by multiplying the two percentages together (.40 x .50 = .20 or 20%), and similarly then find that the probability that it will not rain on either day is 30%. Following the weekend, they discuss the success or failure of their prediction methods.

 

·        Two teams are in a playoff for the division title. If the probability of the Eagles defeating the Falcons in an individual game is 40%, what is the probability that they will win a three game playoff? What about a five-game playoff?