Calculating Probability Independent and Dependent and Mutual

Suppose two tiles are drawn from the collection shown. The first tile is  not replaced before the second tile is drawn. Find P(A and A)

• 4/225

• 1/105

• 3/71

A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced.
P(white, then purple, then black)

• 1/36

• 2/39

• 5/41

• 6/43

Des buys a pack of Starbursts that has 3 orange, 6 pink, 1 yellow, and 5 red Starbursts.  She puts the candy in the bowl.  If she reaches in and grabs two Starbursts without putting one back, what is the probability that she will pick a pink and then a yellow?

• 1/35

• 7/210

• 6/225

• 2/75

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

• True

• False

Which event is not a dependent event?

• Picking 2 students to be the line leader and the door holder from a group of 20 students

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

• Picking 2 crayons from a box without putting any back

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

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

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