3.1 Sample Spaces and Probability

When an event is impossible, what is its probability?

• 1

• 0.5

• 0

• 0.05

Tags

CCSS.7.SP.C.5

If an event cannot happen, what value is assigned its probability?

• 0

• 1

• 0.5

• 0.05

Tags

CCSS.7.SP.C.5

What is the sum of the probabilities of all the outcomes in a sample space?

• 1

• 0

• 0.5

• 2

If the probability that it will rain tomorrow is 0.20, what is the probability that it won't rain tomorrow?

• 0.80

• 0.20

• 1

• 0.40

Tags

CCSS.7.SP.C.5

Classify the probability by type:

According to network surveys, the probability that a person will watch the 6 o'clock news is 0.15.

• Empirical probability

• Classical probability

• Subjective probability

Classify the statement by probability type:

The probability of getting a royal flush when randomly selecting 5 cards is 1/649,740.

• Classical probability

• Empirical probability

• Subjective probability

If two dice are rolled one time, find the probability of getting a sum of 7.

• 1/6

• 1/10

• 1/9

• 5/6

If two dice are rolled one time, what is the probability of NOT getting doubles?

• 1/6

• 5/6

• 1/12

• 1/10

Rural Speed Limits for all 50 states:

60 mph: 1 state

65 mph: 18 states

70 mph: 18 states

75 mph: 13 states

Choose 1 state at random. What is the probability that is speed limit is 70 or less?

• 0.74

• 0.36

• 0.75

• 0.33

Tags

CCSS.7.SP.C.7B

Sources of energy in the US:

Oil 39%, Natural Gas 24%, Coal 23%, Nuclear 8%, Hydropower 3%, Other 3%.

What is the probability that a randomly chosen energy source is NOT oil?

• 0.61

• 0.39

• 0.06

• 0.38