Basics of Probability

What is the probability of blindly choosing a BLUE marble from this bag?

• 1/6

• 6/20

• 0.3

• 0.6

When rolling a regular 6-sided cube one time, what are the possible outcomes?

• 0, 1, 2, 3, 4, 5, 6

• 1, 6

• 1, 2, 3, 4, 5, 6

• 2, 4, 6

An outcome with the probability of 19/20 would be described as _.

• likely

• unlikely

• equally likely as not

• certain

What is the definition of the complement of a probability of an event happening?

• there is no such thing as the complement of probability

• the same as the probability of the event happening

• double the probability of the event happening

• the probability of the event not happening

What is the definition of sample space?

• the set of all possible outcomes of a simple or compound experiment

• the space in which you write a probability answer

• the set of all the prime numbers

• the space between the probability of 0 and 1

What is the definition of "likely" when dealing with probability?

• having the probability less than 1

• the outcome that is the most popular

• having the probability greater than 1/2

• having the probability less than 1/2

What is the definition of "unlikely" when dealing with probability?

• having a probability of less than 1/2

• having a probability of more than 1/2

• having a probability equal to 1/2

• having a probability less than 1

What is the probability of selecting green on this spinner? (Reduce the fraction!)

• 0

• 1/4

• 1/2

• 3/4

A bag has 3 red marbles, 2 blue and 4 yellow. What is the probability of pulling a red? (Reduce the fraction!)

• 3/10

• 3/9

• 1/9

• 1/3

What is the probability of getting any letter that is not A?

• 6/8

• 3/4

• 2/8

• 1/4