Probability Rules and Addition Rules

To find the probability of an event NOT occurring, what rule do we use?

• The Addition Rule

• The Subtraction Rule

• The Complement Rule

• The Multiplication Rule for Independent Events

What rule would I use to find the probability of event A and event B happening?

• Addition Rule

• Subtraction Rule

• Multiplication Rule

• Complement Rule

A factory produces 80% of its products in Plant A and 20% in Plant B. If 5% of the products from Plant A are defective and 10% from Plant B are defective, what is the probability that a randomly selected defective product came from Plant A?

A card is drawn from a standard deck of 52 cards. What is the probability that it is a heart or a king?

In a survey, 30% of people like tea, 20% like coffee, and 10% like both. What is the probability that a person likes either tea or coffee?

A box contains 4 white, 3 black, and 2 red balls. If one ball is drawn at random, what is the probability that it is white or black?

In a group of students, 40% play football, 30% play basketball, and 10% play both. What is the probability that a student plays either football or basketball?

P(bass | 7th grade)

Mathematical Equivalence

OFF

There is a .8 probability that Mr. Faucette teaches Geometry Honors next year. There is a .7 probability he teaches Algebra I Honors next year. There is a .6 probability that he teaches both classes. Given Mr. Faucette does not teach Geometry Honors, what is the probability that he teaches Algebra I Honors?

Mathematical Equivalence

ON