6/11/21 Friday Intro to Probability

A regular 6-sided die is to be rolled one time. What is the probability that the number 5 is rolled?

• 1/5

• 5/6

• 1/6

• 6/5

A regular 6-sided die is to be rolled once. What is the probability that a number less than 3 is rolled?

• 1/3

• 1/6

• 1/2

• 2/3

The likelihood of an event happening is _________.

• percentage

• probability

• parallel

• predictions

An event has a 50% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

An event has a 0% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

An event has a 75% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

An event has a 100% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

When figuring the probability of an event, what number goes on top of your fraction?

• The number of the desired event

• The total number of choices

• The event that happens the most

• The even that happens the least

When figuring the probability of an event, what number goes on the bottom of your fraction?

• The number of the desired event

• The total number of choices

• The event that happens the most

• The even that happens the least

A coin has two sides (heads, tails). If you flip the coin, what is the probability you land on tails?

• 1/4

• 1/3

• 1/2

• 2/1