Section 7.2 Students will explore more with probability. Students will do conditional probability, independent probability and using two way tables to.

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Presentation transcript:

Section 7.2 Students will explore more with probability. Students will do conditional probability, independent probability and using two way tables to get probability.

Eight the hard way Work through 7-67 page 398 Discuss answers

Conditional Probability Probability of an event given another event has occured Independent and Dependent Independent – first event has nothing to do with second flipping a coin and roiling a die Dependent – first event affects the outcome of the second Picking a marble and not replacing it Specific section of a table of data, like eight the hard way Mutually Exclusive – if they both can’t occur at the same time

7-68 Using a 2 way table When do you use all the data when do you use specific sections Look how the questions are worded how would this be written as a probability

Example What is the probability of guessing a student doesn’t have long hair? What is the probability the student is wearing jeans and doesn’t have long hair? Are these independent? Are these events mutually exclusive?

Build a Farm 7-79 pg 403 If we already know we have a cow what is the probability is was red Prob red over total

Conditional Probability P( A given B) = P(A and B) / P(B) Pg 411 Double Spin

Homework Worksheet on probability