Mrs. Nguyen – Honors Algebra II – Chapter 13 Notes ... - Teacher

Two events are independent if the outcome of thefirst event does not affect the outcome of the 2 nd event.“AND” (Intersection) Probability Problems:Two events are dependent if the outcome of the firstevent does affect the outcome of the 2 nd event.If two events, A and B, are in the same sample space,then the probability of A and B occurring is:PA ( and B) PA ( ) PB ( )Practice Problems: Two cards are drawn from a standard deck of cards. Find each probability if noreplacement occurs.17. P(jack, jack) 18. P(heart, club) 19. P(two diamonds)20. P(2 of hearts, diamond) 21. P(2 red cards) 22. P(2 black aces)Practice Problems: Find each probability.23. Monica has 7 blue pens, 3black pens, and 2 red pens in herdesk. If she selects three pens atrandom with no replacement, whatis the probability that she will firstselect a blue pen, then a black pen,and then another blue pen?24. A black die and a white dieare rolled. What is the probabilitythat a 3 shows on the black die anda 5 shows on the white die?25. A contestant on a gameshow reaches into a containerwithout looking and picks twopaper bills. There are 2 $100 bills,4 $50 bills, 10 $20 bills, and 20 $10bills. What is the probability thatthe contestant draws 2 $10 bills oneafter the other withoutreplacement?Mrs. Nguyen – Honors Algebra II – Chapter 13 Notes – Page 6