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 green, and then a blue marble. P(green, blue)

• 4/5

• 43/400

• 15/20

• 7/50

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 non-blue marble on both draws? P(not blue, not blue)

• 9/25

• 4/25

• 3/4

• 1/2

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 non-green marble on both draws? P(not green, not green)

• 9/16

• 1/2

• 9/25

• 169/400

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

A basket of fruit and vegetables is shown below. Belle and Bryan disagree on what the probability of selecting a vegetable, replacing it, and then selecting a fruit is. P(vegetable, fruit). Who is correct?

• Bryan says the probability is 35/128

• Belle says the probability is 15/64

A drawer of office supplies is shown below. What is the probability of selecting a binder clip, replacing it and then selecting a paper clip?

• 9/50

• 1/2

• 21/100

• 6/25

Independent probability happens when the probability of the first event does not affect the probability of the second event.

• True

• False

A pocket contains 3 pennies, 2 nickels, 1 quarter and 4 dimes. What is the probability of randomly choosing a dime, replacing it, and then drawing a penny?

• independent

• dependent

Clinton has a bag of Skittles™. Inside the bag are 6 red, 4 orange, 7 yellow, 3 purple and 4 green Skittles™. What is the probability of drawing a green Skittle™, replacing it, and then drawing another green Skittle™?

• independent

• dependent