Compound Probability Independent vs. Dependent

What is the probability of picking a red marble and keeping it, picking another red marble and keeping it, then picking a blue marble? (leave answer in fraction form in lowest terms)

• 2/105

• 4/343

• 2/63

• 4/210

You roll a 6-sided number cube. What is the probability of rolling an even number three times in a row? (leave answer in fraction form in lowest terms)

• 3/100

• 1/8

• 1/6

• 1/2

A fruit basket contains 9 apples, 3 bananas, 7 oranges, 5 pears, and 1 grapefruit. Humperdink randomly chooses a fruit, does not replace it, then chooses another. What is the probably that he chose two pears? (leave answer in fraction form in lowest terms)

• 1/30

• 4/125

• 1/10

• 9/49

Sarah has two spinners. Spinner A has six equal sections and spinner B has eight equal sections. Sarah will spin the two spinners at the same time. What is the probability that both spinners will land on a color that is not red? (leave answer in fraction form in lowest terms)

• 1/6

• 4/7

• 1/3

• 2/6

A number cube is rolled twice. What is the probability of getting a 6 on the first roll, then a number less than 5 on the second roll? (leave answer in fraction form in lowest terms)

• 2/3

• 1/9

• 5/36

• 1/12

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? (leave answer in fraction form in lowest terms)

• 1/16

• 1/4

• 1/2

• 1/8

A cookie jar has 3 DOZEN chocolate chip, 1 DOZEN peanut butter, and 2 DOZEN oatmeal cookies. If Megan chooses a cookie, does not replace it, then chooses another, what is the probability that she chooses a peanut butter then a chocolate chip cookie? (leave answer in fraction form in lowest terms) (also, sorry for making you hungry!)

• 2/3

• 1/10

• 11/72

• 6/71

If you flip a coin two times, is it independent or dependent probability?

• Independent

• Dependent

When using a 6-sided number cube, what is the probability or rolling a 3, then not rolling a 3, and then rolling an even number? (leave answer in fraction form in lowest terms)

• 1/12

• 5/6

• 5/72

• 5/6

A coin and a number cube with the numbers 1 through 6 are tossed. What is the probability of the coin showing tails and the number cube showing the number 3? (leave answer in fraction form in lowest terms)

• 1/12

• 1/4

• 1/8

• 1/2