Independent vs. Dependent Check for Understanding

The outcome of one event does not affect the outcome of the other event.

• independent event

• dependent event

The outcome of one event does affect the outcome of the other event.

• independent event

• dependent event

Four coins are tossed.

• Independent

• Dependent

There are 2 red, 6 white, and 2 black socks in a box. You choose a sock, put it on, then choose another sock.

• Independent

• Dependent

A CD rack has 8 classical CDs, 5 pop CDs, and 3 rock CDs. Two are chosen without replacement.

• Independent

• Dependent

Spinning a spinner to get a number greater than 5 on a spinner 1 to 8 and tossing a tail on a coin.

• Independent

• Dependent

Which event is not a dependent event?

• Picking 2 students to each pass out notes and collect homework from a group of 20 students

• Picking 2 marbles from a bag without replacing the first marble

• Picking 2 crayons from a box at the same time (simultaneously)

• Picking an earring, replacing it, then picking a 2nd earring

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter, not replacing it, and then picking a penny?

• 20/121

• 8/121

• 2/11

• 4/55

What is the probability of randomly selecting a striped marble, replacing it, and then selecting a solid marble?

• 2/5

• 6/25

• 3/5

• 11/50

There are 15 boys in a class with 14 girls. Find the probability of selecting a girl then a boy

• 15/58
• 18/33
• 2/29
• 1/29