The Multiplication Rule of Probability

Multiplication Rule

​This rule pertains to multiple, combined probabilities (probabilistic circumstances) that are

INDEPENDENT

of each other.

Poll

You flip a coin twice. Is the probability of the second flip DEPENDENT or INDEPENDENT of the first flip?

• Dependent

• Independent

Dependent vs Independent

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Multiple Choice

Are the two events dependent or independent?

Event A: rolling a die

Event B: rolling a die again

• Dependent

• Independent

Multiple Choice

Are the two events dependent or independent?

Event A: Going to school today

Event B: Going to school tomorrow

• Dependent

• Independent

Multiple Choice

Are the two events dependent or independent?

Event A: Passing to the 11th grade

Event B: Passing to the 12th grade

• Dependent

• Independent

Multiple Choice

Two different people are randomly selected from the 991 subjects, find the probability that they are both heavy smokers.

Dependent or independent?

• Dependent

• Independent

Multiple Choice

Find the probability of correctly answering the first 3 questions on a multiple choice test if random guesses are made and each question has 6 possible answers.

Dependent or Independent?

• Dependent

• Independent