Probability Rules.  P. 423 37-41 and 44  P. 430 45,48,51  P. 432 54,57,60.

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Presentation transcript:

Probability Rules

 P and 44  P ,48,51  P ,57,60

 P(A or B) = P(A) + P(B)

 Calculate the probability of picking a king or a queen from a standard deck of cards.  P(King or Queen) = p(king) + p(queen)

 P(A c ) = 1 – p(A)  Find the probability of not choosing a king from a standard deck of cards.

P(A or B) = p(A) + P(B) – p(A and B)

 At a certain school there are 100 students. 36 students take Calculus 50 students take AP Statistics and 25 take both.  Make a Venn Diagram and calculate the probability that a student takes either AP Calculus or AP Statistics

 Give the sample space for rolling two dice. Then calculate the following:  P(sum is five)  P( sum is a prime number)  P( sum is not a perfect square)

 Roll a regular tetrahedral die.  Construct a probability Model for rolling such a die.  Construct a probability model for the sum when two such die are rolled.

 Tell if each of the following represent independent events.  Rolling a die twice A = getting a six on the fist roll B = getting a six on second roll.  Picking two cards from a deck without replacement. A = Getting a black card on first draw B = Getting a black card on second draw

 Roll a die twice. Calculate probability that you get six on both rolls.  P(A and B) =  Draw two cards from a deck without replacement. Calculate the probability of getting to black cards. (Note: Draws are not independent)