Probability Review

What is the probability of rolling a 2 on a standard number cube?

If you roll a number cube, are you more likely to roll a 2 or a 6?

• You are equally likely to roll a 2 or a 6.

• You are more likely to roll a 2.

• You are more likely to roll a 6.

• It depends on the cube color.

A weather forecaster states that there is a 70% chance of rain tomorrow. What does this imply about the likelihood of rain?

• It will definitely rain.

• It will not rain at all.

• There is a 70% chance of rain.

• It is impossible to predict rain.

When tossing a coin, what are the chances of getting tails?

• 0%

• 25%

• 50%

• 75%

If you toss a coin seven times and get tails each time, what are the chances of getting heads on the next toss?

• 0%

• 25%

• 50%

• 100%

If you conduct an experiment where you roll a die 30 times and record the results, how would you find the relative frequency of rolling a 4?

• Count the number of 4s rolled and divide by 30.

• Count all rolls and divide by 4.

• Just count the number of rolls.

• Use theoretical probability only.

If Ms. K tosses a coin 30 times, how many heads do you predict she will get?

• A) 10

• B) 15

• C) 20

• D) 25

After rolling a die six times, you get three 1s. What is the experimental probability of rolling a 1 based on your data?

• 1/2

• 1/6

• 1/3

• 1/4

As you add more coin toss results, what happens to the percent of heads?

• It decreases.

• It remains constant.

• It increases.

• It approaches 50%.

After tossing two coins 36 times, you find that they matched 12 times. What is the experimental probability of getting a match?

• 1/3

• 2/3

• 4/10

• 1/4