# Introduction to Probability

### Learning Objectives

By the end of this section, you will be able to:- Construct probability models.
- Compute probabilities of equally likely outcomes.
- Compute probabilities of the union of two events.
- Use the complement rule to find probabilities.
- Compute probability using counting theory.

**Figure 1.**An example of a "spaghetti model," which can be used to predict possible paths of a tropical storm.

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- Precalculus.
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