Probability Likelihood

What is the likelihood a person seen at NLMS is a student?

• Impossible

• Unlikely

• Neither likely nor unlikely

• Likely

• Certain

What is the likelihood a person seen at NLMS is in New Lex?

• Impossible

• Unlikely

• Neither likely nor unlikely

• Likely

• Certain

What is the likelihood a student at NLMS is in 3rd grade?

• Impossible

• Unlikely

• Neither likely nor unlikely

• Likely

• Certain

You pick a marble from this bag.
What is the probability you will choose either a black or white marble?

• 3/5

• 9/100

• 1/10

• 2/5

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/11

• 5/6

• 1/3

• 5

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

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

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.

Probability can be written as...

(Choose ALL that apply!)

• Percents

• Fractions

• Decimals

• Words

At a community swimming pool there are 2 managers, 8 lifeguards, 3 concession stand clerks, and 2 maintenance people.  If a person is selected at random, find the probability that the person is either a lifeguard or a manager.

• 2/3

• 8/15

• 2/15

• not enough information

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6

• 1/2

• 1/3

• 1/6