Sample and Simple Probability

Martha is tossing a fair coin. She tosses the coin twenty times, and it lands on heads sixteen times. If Martha tosses the coin a twenty-first time, what is the probability that it will land on tails.

What is the probability and likelihood that the marble drawn is NOT red?

The probability of an event is 6/8. Which word best describes the probability?

• certain

• impossible

• likely

• unlikely

What is the probability of spinning an even number?

• certain

• impossible

• equally likely

• less likely

• Answer Choice A
• Answer Choice B
• Answer Choice C
• Answer Choice D

• Answer Choice A
• Answer Choice B
• Answer Choice C
• Answer Choice D

• Answer Choice A
• Answer Choice B
• Answer Choice C
• Answer Choice D

• Answer Choice A
• Answer Choice B
• Answer Choice C
• Answer Choice D

Tessa is rolling a number cube labeled 1–6. What is the probability of Tessa NOT rolling a 1, 2, 5, or 6?

• 1/3

• 1/2

• 2/3

• 5/6

Miss Ward spins a wheel to determine the number of homework problems to assign. There are 20 sections labeled 1–20. What is the probability that there will be fewer than 13 problems assigned for homework?

• 13/20

• 3/5

• 4/9

• 7/20