Statistics and Probability

Sam is fishing in a new pond that was just stocked with 3 bluegill, 4 catfish, 7 bass, and 2 carp. What is the probability that he caught a bluegill or a carp? Simplify.

• 1/40

• 1/8

• 3/124

• 5/16

A spinner consists of two A’s, three B’s, and three C’s. What is the probability of spinning a B or C? Simplify.

• ²/₈

• ²/₃

• ⁶/₈

• ³/₄

In the game that Tony is playing, there is a 1/8 chance the spinner will land on red and a 3/8 chance that the spinner will land on yellow. What is the probability that Tony will NOT spin red, then will spin red?

• 7/64

• 7/16

• 7/8

• 1

A number cube is rolled twice. What is the probability of getting a 6 on the first roll, then a number less than 5 on the second roll? 

• 2/3

• 5/36

• 1/9

• 1/36

A quiz contains 5 true or false questions. If you forgot to study and do not know the answer to them and guess, what is the probability of getting them all right? HINT: What is the probability of getting a True or False question correct on a test

• 1/60

• 1/32

• 1/6

• 1/2

Juan rolled this die 100 times and recorded the following results: He rolled a 1 - 15 times He rolled a 2 - 19 times He rolled a 3 - 17 times He rolled a 4 - 16 times He rolled a 5 - 18 times He rolled a 6 - 15 times What was his experimental probability of rolling a 2?

• 1/6

• 19/100

• 2/6

• 1/3

What is the theoretical probability of rolling this die and getting a 4?

• 4

• 4/6

• 2

• 1/6

Josh flipped this quarter 50 times. It landed on heads 22 times and it landed on tails 28 times. What was the experimental probability of flipping this quarter and having it land on tails?

• 22

• 28

• 28/50

• 14/25

Experimental probability is________________________

• the ratio of the number of times an event occurs to the total number of trials.

• the likelihood of an experiment being successful.

• the ratio of the number of favorable outcomes to the number of possible outcomes

• the likelihood of getting a favorable outcome.

Theoretical Probability is

• the ratio of the number of favorable outcomes to the number of possible outcomes

• the likelihood that your theory is correct.

• the ratio of the number of favorable outcomes to the number of tries.

• the likelihood that an event might occur.