13-1 Experimental and Theoretical Probability. Outcome: the possible result of a situation or experiment Even: may be a single outcome or a group of outcomes.

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Presentation transcript:

13-1 Experimental and Theoretical Probability

Outcome: the possible result of a situation or experiment Even: may be a single outcome or a group of outcomes Sample space: the set of all possible outcomes

Problem 1: Calculating Experimental Probability A quality control inspector samples 500 LCD monitors and find defects in three of them a)What is the experimental probability that a monitor selected at random will have a defect? b)If the company manufactures 15,240 monitors in a month, how many are likely to have a defect based on the quality inspectors results?

Theoretical Probability: describes the likelihood of an event based on mathematical reasoning

Problem 2: Calculating Theoretical Probability What is the probability of rolling numbers that add to 7 when rolling two standard dice?

What is the probability of rolling numbers that add to 13 when rolling two standard dice?

Problem 3: Using Probabilities of an Event and Their Complements A jar contains 10 red marbles, 8 green marbles, 5 blue marbles, and 6 white marbles. What is the probability that a randomly selected marble is NOT green?

A jar contains 10 red marbles, 8 green marbles, 5 blue marbles, and 6 white marbles. What is the probability that a randomly selected marble is NOT red?