Estimate Probability

The Cinemania theater showed 108 different movies last year. Of those, 15 were action movies.

What is a reasonable estimate of the probability that the next movie is an action movie?

What is a reasonable estimate of the probability that the next person to enter Kidz Kare is between 10 and 15 years old?

Sophia has a bag with 3 purple marbles and 4 blue marbles in it. She is going to randomly draw a marble from the bag 280 times, putting the marble back in the bag after each draw. Sophia will draw a purple marble...

• Exactly 120 times

• Close to 120 times but probably not exactly 120 times

• Exactly 160 times

• Close to 160 times but probably not exactly 160 times

Margo is going to spin the following spinner 210 times. The spinner is divided into equal sections. What is the best prediction for the number of times the spinner will not land on an elephant?

• Exactly 90 times

• Close to 90 times but probably not exactly 90 times

• Exactly 120 times

• Close to 120 times but probably not exactly 120 times

Jake is going to call one person from his contacts at random. He has 30 total contacts. 16 of those contacts are people he met at school.

What is P(call a person from school)?

You spin the spinner shown below once. Each sector shown has an equal area.

What is P(not shaded sector)?

You roll a 6-sided dice.

What is P(roll great than 3)?

What is P(not 5)?

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