Identifying Independent/Dependent Compound Probability

If you flip a coin then roll a number cube, is it independent or dependent probability?

• Independent

• Dependent

What is the probability of picking a blue marble, putting it back in the bag, then picking a red marble? (leave answer in fraction form in lowest terms)

• 9/49

• 16/49

• 12/42

• 12/49

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

• 9/49

• 1/7

• 3/14

• 6/42

If you spin two times, what is the probability of landing on green both times? (leave answer in fraction form in lowest terms)

• 1/6

• 1/9

• 1/36

• 1/30

What is the probability of picking a green marble, keeping it, then picking green again? (leave answer in fraction form in lowest terms)

• 1/7

• 1

• 1/49

• 0

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

Valentina has 3 raffle tickets. One hundred tickets were sold. Her name was not drawn for the first prize. What is the probability that her name will be drawn for the second prize? (leave answer in fraction form in lowest terms, and remember that the first ticket was already drawn out and was not replaced)

• 1/3

• 1/33

• 3/100

• 2/99

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