Quiz about Quizizz on Probability of Independent and Dependent Events

Question 1

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

Accepted Answer

P(A) $$\circ$$ P(B)

Answer

P(A) + P(B)

Answer

P(A) - P(B)

Answer

P(A) $$\div$$ P(B)

Question 2

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

Accepted Answer

$$\frac{1}{6}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{3}{6}$$

Question 3

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

Accepted Answer

$$\frac{1}{16}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{2}{4}$$

Answer

$$\frac{1}{8}$$

Question 4

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?

Accepted Answer

$$\frac{1}{20}$$

Answer

$$\frac{1}{10}$$

Answer

$$\frac{1}{2}$$

Answer

Question 5

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?

Accepted Answer

$$\frac{1}{380}$$

Answer

$$\frac{1}{20}$$

Answer

$$\frac{1}{39}$$

Answer

$$\frac{2}{380}$$

Question 6

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?

Accepted Answer

$$\frac{2}{5}$$

Answer

$$\frac{4}{6}$$

Answer

$$\frac{2}{4}$$

Answer

$$\frac{3}{5}$$

Question 7

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

Accepted Answer

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

Answer

Rolling two six sided die and getting 5 both times.

Answer

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

Answer

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

Question 8

Which of the following is an example of dependent events?

Accepted Answer

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

Answer

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

Answer

Choosing two cards from a standard deck of cards,

with replacement, and both cards are the king of

hearts.

Answer

Flipping a coin twice and getting heads both times.

Quizizz on Probability of Independent and Dependent Events

10 questions

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) = ?

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?

Which of the following is an example of dependent events?

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