7:12-2 Experimental probability. vocab Experimental probability- ratio of the number of times an event occurs to the total number of trials.

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Presentation transcript:

7:12-2 Experimental probability

vocab Experimental probability- ratio of the number of times an event occurs to the total number of trials

Experimental probability In 25 matches against Sam, Peter wins 15 matches. What is the experimental probability that Peter will beat Sam? Peter won 15 matches There are a total of 25 matches So the experimental probability is 15/25  3/5 What is the experimental probability that Sam will beat Peter?

samples Jacob plays around the world against Mr. M. Jacob wins 5 out of 8 games. What is the experimental probability that Jacob wins? What is the experimental probability that Mr. M wins?

Simulating an event A quality control officer found that 10 out of 120 toys were flawed. What is the probability of finding a flawed toy? How many would you expect to find in 250 toys?

The probability that you have a younger sibling is 25%. If 125 students are surveyed, how many are expected to have a younger sibling?

Questions?

homework Worksheet p. 235 skip 11