Probability and Outcomes

What is the probability of spinning green?

• 0

• 1/4

• 1/2

• 3/4

What is the probability of spinning an even number?

• 16 2/3%

• 33 1/3%

• 50%

• 75%

An automobile dealer decides to select a month for its annual sale.  Find the probability that it will be September or October.

• 1/12

• 1/6

• 1/4

• 5/6

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

Which event is not a dependent event?

• Picking 2 students to each be line leader and door holder from a group of 20 students

• Picking 2 marbles from a bag without replacing the first marble

• Picking 2 crayons from a box at the same time (simultaneously) 

• Picking an earring, replacing it, then picking a 2nd earring

You flip a nickel three times.
Find the probability that all flips will land on tails.

• 1/2

• 1/4

• 1/6

• 1/8

Probability is ...

• the chance that some event will occur.

• a game that involves coins.

• a guarantee.

Probability can be written as ...

• a fraction

• a decimal

• a percent

• all of the above

What is the probability of flipping a coin and getting heads?

• 1/2

• 1/3

• 1/4

• Never, Tails never fails.

Experimental Probability is:

• What Will happen 

• What actually happens

• What should happen

• What I think Happens