Probability Unit Study

Select The Correct Simulation for this situation.

On a true-false question, there is a 50% chance of getting the answer correct

• rolling an even number on a fair number cube

• spinning a 1 on a spinner with 4 equal sections labeled 1 - 4

• drawing the name Lisa out of a hat with the names Lisa, Paul, and Silas in the hat

Select the simulation that best represents this situation:

The Weather report shows that there will be a 33% chance of rain.

• Rolling a 3 on a number cube

• Rolling a 1 or a 2 on a number cube

• Spinning a 1 on a spinner with 4 equal sections labeled 1 - 4

• Spinning a 1 or a 2 on a spinner with 10 equal sections labeled 1 - 10

How could you simulate randomly choosing a place for lunch out of 6 different restaurants?

• flip a coin
• roll a die
• spin a 4-sided spinner
• flip 2 coins

Twenty-five percent of the time you are late to school. Which simulation best represents this?

• spinning a 1 or a 2 on a spinner with 10 equal sections labeled 1 - 10

• rolling a 1 or a 2 on a fair number cube

• rolling an even number on a fair number cube

• spinning a 1 on a spinner with 4 equal sections labeled 1 -4

A doctor's office cancels appointments for 20% of the time.

Which 2 simulations best represents this?

• Flipping a coin and landing on heads

• Spinning a 1 or a 2 on a spinner with 10 equal sections labeled 1 - 10

• Spinning a 2 on a Spinner that has 5 equal sections

• Rolling an odd number on a fair number cube

There are three different colored M & M's - red, green, and white. The probability of selecting a red M & M is 2/5, and the probability of selecting a green M & M is 1/4 , so what is the probability of selecting a white M & M?

• 13/20

• 1/3

• 7/20

• 2/3

The letters in the word JANUARY are put into a bag and drawn randomly. What is the probability of an A?

• 1/6

• 5/7

• 5/6

• 2/7

In Mr. Martinez's sixth period class, there are 8 boys and 12 girls. what is the probability of selecting a girl?

• 3/5

• 1/2

• 2/5

The weather report says there is a 30 % chance of rain. What is the probability that it does not rain?

• 100%

• 30%

• 60%

• 70%

The numbers 1- 12 are written on a card and placed in a bag. What is the probability that a number divisible by 3 is drawn?

• 1/12

• 1/6

• 1/3

• 1/4