Alg II (Quiz 10.4-10.5)

State whether the events are overlapping or disjoint.

Ten slips of paper are numbered 1 to 10 and then put in a container. What is the probability of drawing a 3 or a 7?

• overlapping

• disjoint

State whether the events are overlapping or disjoint.

A die is rolled. What is the probability of rolling an odd number or a number less than 4?

• overlapping

• disjoint

State whether the events are overlapping or disjoint.

A card is drawn from a deck. What is the probability that it is red or a face card?

• overlapping

• disjoint

State whether the events are independent or dependent.

You pull your friend's name out of a hat that holds 20 different names, replace the name, then draw out your friend's name again.

• independent

• dependent

State whether the events are independent or dependent.

You remove a black sock from a drawer without looking, then remove another black sock.

• independent

• dependent

State whether the events are independent or dependent.

You choose a member of the basketball team to be the center. You choose a different member to be a forward.

• independent

• dependent

A fair die is rolled. What is the probability of rolling a 3 or 4?

• 1/6

• 1/2

• 1/3

• 3/4

Six balls numbered from 1 to 6 are placed in a bag. One ball is selected at random. What is the probability it is NOT a 3.

• 1/3

• 1/2

• 1/6

• 5/6

A jar contains 21 green marbles and 30 yellow marbles. One marble is drawn at random and the color noted. It is then returned to the jar, mixed in, and another marble is drawn. What is the probability that both marbles are green?

• 16%

• 17%

• 20%

• 41%

A laundry bag contains 4 brown socks and 7 black socks. Find the probability of picking a brown sock and then a black sock. (The first sock is not returned to the bag.)

• 25%

• 23%

• 32%

• 31%