Do Now: Discovery Activity

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Presentation transcript:

Do Now: Discovery Activity 3 minutes

Addition Rule Unit 3: Probability

Objectives Calculate the probability of one event or another occurring using the General Addition Rule. Conclude through discovery that the probability of one mutually exclusive event or the other is P(A) + P(B). GRIT Works independently with focus RESPECT Knows when and how to include others RESPONSIBILITY Gets to work right away rather than procrastinating LOVE OF LEARNING Is eager to explore new things

The Addition Rule Or Add! Mutually Exclusive Events Independent Events Mutually Exclusive Events Independent Events Conditional Events Addition Rule Probability of A or B P(AUB) Or Add!

41 40 42 43 45 44 39 38 33 32 34 35 37 36 46 47 56 55 57 58 60 59 54 53 49 48 50 51 52 31 30 9 8 10 11 13 12 7 6 1 End 2 3 5 4 15 14 25 24 26 27 29 28 22 23 17 16 19 18 20 21 Your Understanding Male Female Total Democrat 47 13 60 Republican 36 4 40 83 17 100 What is the probability that a randomly selected senator is a female OR a democrat?

CUSS The Gable Construction Corporation has placed bids for installing electronic message boards on two different highways. Because of competition from other companies, Gable Construction Corporation officials estimate that the probability that they will be awarded the Macon Expressway contract is 0.65 and the probability that they will be awarded the Seaview Expressway contract is 0.43. Furthermore, the probability that they will be awarded both contracts is 0.22. What is the probability that they will be awarded the contract for either the Macon Expressway or the Seaview Expressway.

Independent Practice and Homework Khan Academy: “Multiplying Dependent Probabilities” and “Adding Probabilities” Gall-up Poll Project Check-in: Topic and Survey Questions to be emailed to ssweeney@kippphiladelphia.org by Friday 2/13.