Understanding probability

Suppose that a bag contains 3 blue, 2 red, and 5 green marbles. What is the probability of selecting a green marble?

• impossible

• unlikely

• equally likely as not

• likely

• certain

The probability that an event will occur is 7/7. Which of these best describes the likelihood of the event occurring?

• Unlikely

• Likely

• Certain

• Impossible

What is the probability of the spinner NOT landing on yellow or green? (percentage)

• 13.5%

• 88%

• 37.5%

• 62.5%

What is the probability that the spinner will land on the number 3?

• 2/5

• 3/4

• 1/2

• 2/6

Ally had a bag containing 2 blue, 3 red, and 4 green marbles. What is the probability of pulling out a yellow marble?

• impossible

• unlikely

• likely

• certain

What is the probability of choosing a green marble?

• Certain

• Likely

• Unlikely

• Impossible

True or false.

To convert a decimal into a percentage you multiply the decimal by 100.

• true

• false

Katie McKenna spun the spinner  $75$  times, then did a dance and landed on " $3$  " thirty times.

What is the experimental probability as a percentage?

•  $20\%$  
  

•  $30\%$  
  

•  $40\%$  
  

•  $50\%$  
  

Find the theoretical probability of NOT landing on yellow if you spin the spinner.

• $\frac{1}{8}$

• $\frac{7}{8}$

• $1$
  

• $0$
  

What is the probability of spinning green? Make sure your answer is reduced.

• 0

• 1/4

• 1/2

• 3/4