1. EXAMPLE 2 A cat that knows the shake command offers one of its front paws to shake. The table shows the number of times the cat offered each of its paws when asked to shake. Animal Training What is the experimental probability that the cat will offer its right paw when asked to shake? Paw Offered to Shake Left paw 38 Right paw 12 Finding an Experimental Probability

2. EXAMPLE 2 SOLUTION Determine the number of successes and the number of trials. Because a success is offering a right paw, there are 12 successes. There are 38 + 12 = 50 trials. STEP 1 Find the probability. STEP 2 P (right paw) = 12 50 There are 12 Success There are 50 Trials. 6 25 = Simplify Finding an Experimental Probability

3. EXAMPLE 2 ANSWER The probability that the cat will offer its right paw when asked to shake is, 0.24, or 24%. 6 25 Finding an Experimental Probability

4. GUIDED PRACTICE for Example 2 ANSWER, 0.76, or 76%. 19 25 ANSWER, 0.7, or 70%. 7 10 In Example 2, what is the probability that the cat will offer its left paw when asked to shake? What If? 4. Of the 20 voters polled after an election for class president, 14 of the voters voted for Sean. What is the probability that a randomly chosen voter voted for Sean? Election 5.

5. GUIDED PRACTICE for Example 2 ANSWER, 0.26, or 26 % 4 15 2 3 Of the 30 students surveyed in the school hallway, 8 of them said their favorite class was science. What is the probability that a randomly chosen student likes science class best? Survey 6.