Probability Quiz (Quiz # 3)

Name: ______Date: ______

Probability:

All answers must be reduced.

1. Experiment is rolling a fair 6-sided number cube once.

P(rolling a ‘5’ or rolling a ‘4’) = ______

2. The game is picking two cards from a standard deck of cards. Once the card is picked, it is put back into the deck (with replacement problem)

P(“king” and “heart”) = ______

3. The letters “STAYINSCHOOLTOBECOOL” are in a brown bag. You are to pick one letter from the bag in a random fashion without looking into the bag.

P(selecting an “T”) = ______

4. The experiment is flipping a fair coin three times. The winning order must be flipping a heads first, a heads second and a tails last.

P(Picking a Tails, a heads, and a tails ) = ______

5. Draw a tree diagram for question number 4.

6. The experiment is rolling 2 dice.

P(rolling a sum of 5) = ______Name: ______Date: ______

Probability: 7. There are 19 red marbles and 18 green marbles in a bag. The experiment is picking a marble, and then placing the marble back in the bag. The second pick is done after the first marble is put back into the bag.

P(picking a red, and then picking a red)

8. There are 31 red marbles and 18 green marbles in a bag. The experiment is picking a marble and NOT replacing it. The second pick is done after the first marble is randomly selected. (a) P(“red” and “red”) = ______

(b) P(“red” and “green”) = ______

9. The numbers 12 thru 24 are in a bag. The experiment is to randomly pick a number out of the bag.

(a) P(picking an even) = ______

(b) P(picking an odd or an even) = ______

c) P(picking a number that has only one digit) = ______

10. Assume the weather people are always accurate. Meteorologist says there is a 40% chance of raining on Wednesday. Express your answer in a reduced fraction.

P(NOT raining on Wednesday) = ______

11. A child has 2 pairs of pants (green, and blue), 2 shirts (white, and black), and 2 pairs of shoes ( pink, and red). Assume that you don’t care about what matches.

 How many total outfits exist?  List all of the different outfits that this child has if you don’t care about what matches.