Probability as Percents

Probability can be written as...

(Choose ALL that apply!)

• Percents

• Fractions

• Decimals

• Words

Which of the following are examples of "likelihood"? Choose ALL that apply.

• It is equally likely / unlikely that you will flip heads as tails.

• The chance of flipping a coin and gettings heads is 1/2.

• There is a 72% chance it will rain today.

• It is likely that we will have school tomorrow.

Which of the following are examples of Probability? Choose ALL that apply.

• It is impossible for the sun to set in the east.

Probability can be written as ...

• a fraction

• a decimal

• a percent

• all of the above

If an event is absolutely certain, what percent probability will it have?

• 0%

• 25%

• 75%

• 100%

The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school. How many blood donors should the American Red Cross expect to collect from until it gets a donor with Type B blood?

• 9.1 donors

• 8.5 donors

• 10.3 donors

• Cannot be determined.

What is the probability that Spongebob will watch 3 hours of TV, written as a percent?

• 40%

• 2%

• 2.5%

• 30%

What is the probability of Spongebob watching TV for 0 hours, written as a percent?

• 4%

• 0%

• 6.25%

• 16%

What is the probability that Spongebob will watch 1 or more hours of TV?

• 13%

• 84%

• 31%

• 40%

What is the probability of selecting an orange candy?

• 0%

• 25%

• 50%

• 100%