Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
7. Theoretical and Experimental Probability
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Exercise 21 Page 773

1/3

Practice makes perfect
When calculating a probability, we are comparing the number of favorable outcomes to the number of possible outcomes. To calculate the probability of a spinner landing on a section with a number greater than four we will use the Probability Formula. P=Favorable Outcomes/Possible Outcomes Now we can look at the spinner and find the number of possible outcomes.
On the spinner there are 6 values. Therefore, the number of possible outcomes is 6. Now we can find how many outcomes will result in the spinner landing on a number greater than four. 1, 2, 3, 4, 5, 6 There are 2 numbers greater than four. Therefore, the number of favorable outcomes is 2. Now we have enough information to calculate P(Greater than4).
P=Favorable Outcomes/Possible Outcomes
P(Greater than4)=2/6
P(Greater than4)=1/3
The probability of the spinner landing on a number greater than four is 13, which can also be written as 1:3.