Understanding Probability

What does a 0% probability indicate about an event?

• The event is certain to happen

• The event might happen

• The event is impossible to happen

• The event is unlikely to happen

If there's a 100% chance of rain, what does it mean?

• It is certain to rain

• It is unlikely to rain

• It will definitely not rain

• It might rain

What is the probability of landing on yellow if a spinner has 8 equal sections and 2 are yellow?

• 25%

• 100%

• 75%

• 50%

What does a probability of 1/4 signify?

• Very likely

• Certain

• Impossible

• Unlikely

How do you calculate the probability of not landing on red if 7 out of 8 sections are not red?

• 25%

• 75%

• 87.5%

• 12.5%

What is compound probability?

• The certainty of an event happening

• The likelihood of one event happening

• The likelihood of two or more events happening

• The impossibility of an event happening

If the probability of spinning a 2 is 1/8 and spinning red is also 1/8, what is the compound probability of both events happening?

• 1/64

• 1/4

• 1/16

• 1/8

How do you calculate the compound probability of two independent events?

• By dividing their probabilities

• By adding their probabilities

• By subtracting their probabilities

• By multiplying their probabilities

What is the probability of landing on purple and then on blue if purple is 2/8 and blue is 3/8?

• 6/64

• 5/16

• 3/32

• 3/64

What does it mean if an event has a probability of 3/32?

• It is certain to happen

• It is impossible to happen

• It is likely to happen

• It is somewhat unlikely to happen