9-3 Independent Probability

A bag contains 8 blue marbles, 7 green marbles, and 5 yellow marbles. Suppose you drew one marble from the bag above, replaced it and then drew a second marble. What is the probability of drawing a black marble, and then a green? P(black, green)

• 7/50

• 0

• 1

• 1/10

A bag contains 8 blue marbles, 7 green marbles, and 5 yellow marbles. Suppose you drew one marble from the bag above, replaced it and then drew a second marble. What is the probability of picking a yellow marble on both draws? P(both yellow)

• 1/10

• 9/16

• 1/4

• 1/16

A bag contains 8 blue marbles, 7 green marbles, and 5 yellow marbles. Suppose you drew one marble from the bag above, replaced it and then drew a second marble. What is the probability of picking a yellow marble, and then blue? P(yellow, blue)

• 9/20

• 3/20

• 1/10

• 13/20

A jar of coins has 8 pennies, 5 nickels, 1 dime, and 7 quarters. Aaron and Adelle do not agree what the probability of drawing a quarter, replacing it, and drawing another quarter is. P(quarter, quarter). Who is correct?

• Aaron says the probability is 1/9

• Adelle says the probability is 1/10

What is the probability of drawing the angel emoji card, replacing it, and drawing the laughing emoji card?

• 1/16

• 1/64

• 9/16

• 1/32

Ricardo has the spinner pictured here and a bag of marbles filled with 2 red marbles, 3 green marbles, and 3 blue marbles. What is the probability that Ricardo spins red on the spinner and picks a red marble out of the bag?

• 1 ⁄ 16
• 1 ⁄ 2
• 1 ⁄ 4
• 1 ⁄ 8

To find the probability you of INDEPENDENT events... 

• Find the probability of event #1
• Find the probability of event #2
• Add the probability of both event #1 & event #2
• Multiply the probability of both event #1 & event #2

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Probability of:
Spinning a 3
Drawing an A

• 2/8
• 1/4
• 1/16
• 1/8

Tags

CCSS.7.SP.C.7B

Probability of:
Spinning a 1
Drawing not a D

• 1/4
• 3/12
• 3/4
• 9/32

Probability of:
Spinning a 4
Drawing an B or C

• 1/2
• 1/12
• 1/16
• 1/14

Tags

CCSS.7.SP.C.7A