# Grade 7 Math - Using Probability Models

Develop a uniform probability model by assigning equal probability to all outcomes, and use the model to determine probabilities of events. For example, if a student is selected at random from a class, find the probability that Jane will be selected and the probability that a girl will be selected.

## TOPICS RELATED TO USING PROBABILITY MODELS

### What is an example of a probability model?

A probability model is a mathematical representation of a random phenomenon. ... the sample area s for a probability version is the set of all possible outcomes. for instance, suppose there are five marbles in a bowl.

### What are the four rules of probability?

Solution: our intuition tells us that because the 4 blood sorts o, a, b, and ab exhaust all the opportunities, their possibilities together ought to sum to at least one, that is the possibility of a “positive” occasion (a person has this sort of four blood types for positive).

### What are the 3 rules of probability?

There are 3 basic regulations related to chance: the addition, multiplication, and supplement guidelines. the addition rule is used to calculate the possibility of occasion a or event b happening; we specific it as: p(a or b)

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