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a. The historic carousel at the park has 4 giraffes, 4 lions, 2 elephants, 18 horses, 1 monkey, 6 unicorns, 3 ostriches, 3 zebras, 6 gazelles, and even 1 dinosaur. Eric's niece wants for Eric to randomly pick an animal to ride. What is the probability (expressed as a percent) that Eric picks a horse, a unicorn, or a zebra? b. Eduardo has in his pocket $1 in pennies, $1 in nickels, and $1 in dimes. If he randomly pulls out just one coin, what is the probability that he will pull out a dime? c. P(rolling an 8) with one regular die if you roll the die just once.

a. The historic carousel at the park has 4 giraffes, 4 lions, 2 elephants, 18 horses, 1 monkey, 6 unicorns, 3 ostriches, 3 zebras, 6 gazelles, and even 1 dinosaur. Eric's niece wants for Eric to randomly pick an animal to ride. What is the probability (expressed as a percent) that Eric picks a horse, a unicorn, or a zebra? b. Eduardo has in his pocket $1 in pennies, $1 in nickels, and $1 in dimes. If he randomly pulls out just one coin, what is the probability that he will pull out a dime? c. P(rolling an 8) with one regular die if you roll the die just once.

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Review & Preview 1.2.1 Search CC Geometry 1-55. Probability is used to make predictions. See the Math Notes in this lesson for more details. Whenever the outcomes are equally likely, the probability in general is: P(success) number of success total number of possible outcomes For example, if you were to reach into a bag with 16 total shapes, four of which have right angles, and randomly pull out a shape, you could use probability to predict the chances of the shape having a right angle. number of success P(right angle): total number of possible outcomes 4 shapes with right angles 16 total shapes = = 0.25 = 25% %3D %3D The example above shows all forms of writing probability: (read "4 out of 16") is the probability as a ratio, 0.25 is its decimal form, and 25% is its equivalent percent. What else can probability be used to predict? Analyze each of the situations below: a. The historic carousel at the park has 4 giraffes, 4 lions, 2 elephants, 18 horses, 1 monkey, 6 unicorns, 3 ostriches, 3 zebras, 6 gazelles, and even 1 dinosaur. Eric's niece wants for Eric to randomly pick an animal to ride. What is the probability (expressed as a percent) that Eric picks a horse, a unicorn, or a zebra? b. Eduardo has in his pocket $1 in pennies, $1 in nickels, and $1 in dimes. If he randomly pulls out just one coin, what is the probability that he will pull out a dime? c. P(rolling an 8) with one regular die if you roll the die just once. d. P(dart hitting a shaded region) if the dart is randomly thrown and hits the target at right. target
Transcribed Image Text:Review & Preview 1.2.1 Search CC Geometry 1-55. Probability is used to make predictions. See the Math Notes in this lesson for more details. Whenever the outcomes are equally likely, the probability in general is: P(success) number of success total number of possible outcomes For example, if you were to reach into a bag with 16 total shapes, four of which have right angles, and randomly pull out a shape, you could use probability to predict the chances of the shape having a right angle. number of success P(right angle): total number of possible outcomes 4 shapes with right angles 16 total shapes = = 0.25 = 25% %3D %3D The example above shows all forms of writing probability: (read "4 out of 16") is the probability as a ratio, 0.25 is its decimal form, and 25% is its equivalent percent. What else can probability be used to predict? Analyze each of the situations below: a. The historic carousel at the park has 4 giraffes, 4 lions, 2 elephants, 18 horses, 1 monkey, 6 unicorns, 3 ostriches, 3 zebras, 6 gazelles, and even 1 dinosaur. Eric's niece wants for Eric to randomly pick an animal to ride. What is the probability (expressed as a percent) that Eric picks a horse, a unicorn, or a zebra? b. Eduardo has in his pocket $1 in pennies, $1 in nickels, and $1 in dimes. If he randomly pulls out just one coin, what is the probability that he will pull out a dime? c. P(rolling an 8) with one regular die if you roll the die just once. d. P(dart hitting a shaded region) if the dart is randomly thrown and hits the target at right. target
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