Probability of TWO EVENTS

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Presentation transcript:

Probability of TWO EVENTS Independent Events: Probability (A and B) = 1. What is the probability of tossing a 2 on a fair die and tossing heads on a coin? 2. What is the probability of tossing three heads in three tosses of a coin? Probability of TWO EVENTS Dependent Events: Probability (A then B) = 5. A box contains 6 red marbles, 4 green marbles, and 5 purple marbles. What is the probability that a red marble is drawn on the first draw (is not replaced), and a purple marble is drawn on the second draw? 6. A jar contains 10 pennies, 20 quarters, and 30 dimes. Two coins will be selected, one at a time, with no replacement. What is the probability of selecting a quarter, followed by a dime? Events that do not influence one another. Events that influence each other. One event affects the probability of the second event. 3. A student flips a coin and then rolls a die. What is the probability the outcome will be tails and a number less than 5? C. B. D. 4. A fair number cube is rolled two times. What is the probability a 3 and then an even number will be rolled? C. B. D.