Lesson 13
What Are Probabilities?
Problem 1
List the sample space for each chance experiment.
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Flipping a coin
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Selecting a random season of the year
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Selecting a random day of the week
Solution
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Problem 2
A computer randomly selects a letter from the alphabet.
- How many different outcomes are in the sample space?
- What is the probability the computer produces the first letter of your first name?
Solution
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Problem 3
What is the probability of selecting a random month of the year and getting a month that starts with the letter “J?” If you get stuck, consider listing the sample space.
Solution
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Problem 4
\(E\) represents an object’s weight on Earth and \(M\) represents that same object’s weight on the Moon. The equation \(M = \frac16E\) represents the relationship between these quantities.
- What does the \(\frac16\) represent in this situation?
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Give an example of what a person might weigh on Earth and on the Moon.
Solution
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(From Unit 5, Lesson 1.)