Quizizz on Probability of Independent and Dependent Events

Events are ___________ if the occurrence of one event does not affect the probability of the other.

If A and B are independent events, then P(A and B) = ?

• P(A) + P(B)

• P(A) - P(B)

What is the probability of rolling a 4 on one number dice?

What is the probability of tossing a coin and having it land heads 4 times in a row?

Events are ___________ if the occurrence of one event affects the probability of the other.

Out of a class of 20 students, your teacher chooses students at random to present their projects. What is the probability that she chooses you?

Out of a class of 20 students, your teacher chooses students at random to present their projects. What is the probability that she chooses you first, and then chooses Kim second?

There are two glasses of root beer and 4 glasses of cola on the counter. Kayla drinks two of them at random. What is the probability that she drank 2 glasses of cola?

Which of the following is not an example of independent events?

• Rolling two six sided die and getting 5 both times.

• Picking an ace out of a deck of cards, then picking another ace out of the same deck with replacing the first.

• Picking the person who scored the most points at the basketball game, and the person who got the most rebounds.

• Picking two different people in class to write on the board.

Which of the following is an example of dependent events?

• Rolling a 6 sided die and getting a 3 then rolling it again and getting a 4.

• Choosing the starting player line-up for a football game.

• Choosing two cards from a standard deck of cards,

  with replacement, and both cards are the king of

  hearts.

• Flipping a coin twice and getting heads both times.