Sol 8.11 Probability

A box contains 20 marbles. 10 are white, 6 are red, 3 are blue, and 1 is green. What is the probability of choosing a white then a red without replacement?

• 3/19

• 3/20

• 16 / 39

A bag contains chips numbered 1 through 11. What is the probability of randomly drawing an even numbered chip from the bag?

• 1

• 6 / 11

• 5 / 11

• 2, 4, 6, 8, 10

A bag contains chips numbered 1 through 11. What is the probability of randomly drawing an odd numbered chip and then an even number from the bag without replacement?

• 30/121

• 36/120

• 36/121

• 30/110

A die is rolled 30 times and 4 comes up 5 times. How does the experimental probability compare to theoretical?

• Theoretical is greater than experimental

• Theoretical and experimental probability is the same.

• Experimental is greater than theoretical

Jake has a stack of 8 CDs. Three are rock, 3 are rap, and 2 are gospel. If he takes a CD from the stack without looking, what is the probability he chooses a rap CD?

• 3 / 8

• 2 / 8

• 5 / 8

• 1 / 8

Evan has 8, 5 cent coins, 6, 10 cent coins, and 2, 20 cent coins in his bank. If he shakes out 2 coins, what is the probability that the first coin will be a 10 cent coin and the second will be a 20 cent coin?

• 3 / 64

• 1/20

• 1 / 24

• 6

You flip a coin and toss a 1-6 number cube. What is the probability of getting heads and 4?

• 2 / 8

• 1 / 8

• 2 / 12

• 1 / 12

You flip a coin and toss a 1-6 number cube. What is the probability that you roll a 5 and flip tails?

• 1 / 12

• 2 / 12

• 1 / 8

• 2

You roll a cube which has the numbers 13, 7, 8, 11, 8, and 13 on it. You then spin a spinner with the letters G, H, E, G, H, C, E, and E. Find the probability of rolling a 13 and spinning a H.

• 2 / 7

• 1 / 12

• 1 / 48

• 1 / 24

You roll a number cube numbered from 1 to 6. You then spin a spinner with 4 colored sections: pink, red, white, and gray. Find the Probability of spinning white and rolling a 2.

• 2 / 10

• 1 / 24

• 2 / 8

• 1 / 12