Introduction to Probability Lesson

Introduction to Probability

By Jean Wanamaker

Multiple Choice

Probability is the measure of the _____ that an event will occur.

• outcome

• likelihood

• measure

• possible

Multiple Choice

The probability of an event can be espressed as a____, ____, and ____.

• fraction, decimal, probability

• decimal, percentage,outcome

• fraction, percent, decimal

• fraction, percentage, certain

Multiple Choice

"The sun will rise in the morning"

• Somewhat Likely

• Not Very Likely

• Impossible

• Certain

Multiple Choice

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

• 0%

• 25%

• 75%

• 100%

Multiple Choice

Where on the number line would you place the following event: "When I walk out of the school today, I will see a dinosaur walking around in the parking lot."

• impossible

• likely

• unlikely

• certain

Multiple Choice

Where on the number line would you place the following event: "If you roll a dice with sides 1-6, it will land on an even number."

• equally likely

• likely

• impossible

• certain

Multiple Choice

Where on the number line would you place the following event: "If you flip a coin, it will land on tails."

• 0%

• 25%

• 50%

• 100%

Multiple Choice

You spin the spinner 1 time.

What is P(7)?

• 1%

• 50%

• 20%

• 25%

Multiple Choice

You pick a card at random.

What is P(5)?

• 3/1

• 3/4

• 1/4

• 1

Multiple Choice

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

Multiple Select

What is the probability of spinning a 2 on the spinner?

• 1/2

• 1/3

• 1/8

• 1/4

Multiple Choice

A die is rolled. What is the probability that the result is less than 3 ?

• 1/2
• 1/3
• 1/4
• 1/6

Multiple Choice

What is the theoretical probability of rolling a number less than 6 when rolling one six-sided die?

• 1/5
• 2/3
• 5/6
• 1/3

Multiple Choice

What is the probability of spinning yellow?

P(yellow) =

• 1/11

• 1/12

• 1/4

• 3/4

Multiple Choice

Use the spinner to determine the theoretical probability of the event.

Spinning a number greater than 10

• 0

• 1

• $$\frac{10}{8}\ or\ \frac{5}{4}$$

• $$\frac{1}{10}$$

Multiple Choice

Lucy has the spinner pictured as part of a game. In order to win, she has to land on green. What is the probability of Lucy landing on GREEN?

P(green) = ______

• 1/4 = 25%

• 1/6 = 16.6%

• 1/8 = 12.5%

• 3/4 = 75%