Probability of Simple Events

This is the set of all outcomes in an experiment.

• Experiment

• Outcome

• Sample Space

• Event

A balanced die is rolled. What is the probability of rolling a number that is not 3?

• 0/6 or 0

• 5/6

• 1/6

• 6/6 or 1

Tags

CCSS.7.SP.C.5

Which of the following statement is TRUE?

• Answering a true/false-type question has one possible outcome.

• Flipping a coin thrice has 3 possible outcomes.

• The probability of getting a head when a coin is tossed can be expressed as 1/2, 0.5, or 50%.

• The probability of rolling 7 in a die is 1/7.

Tags

CCSS.7.SP.C.5

Consider a Spinner with 12 equal parts numbered from 1 to 12. Assume that the arrow will only point to one sector nor to boundary lines. What is the probability of landing a number divisible by 3?

• 1/3

• 1/2

• 1/4

• 1/5

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

If a letter is chosen at random from the word PERSEVERANCE, what is the probability that the letter chosen is E?

• 1/8

• 1/3

• 1/4

• 1/2

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Of the 45 students in a class, 25 are boys. If a student is selected at random for a field trip, what is the probability of selecting a girl?

• 9/4

• 4/9

• 5/9

• 9/5

Tags

CCSS.7.SP.C.5

Rolling a 15 on a number cube is

• Impossible

• Certain

• Unlikely

• Equally Likely

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

The chance that an event will happen.  A ratio of chance/all chances.

• odds
• probability
• outcomes
• tree diagram

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

A bag of markers has 4 red markers, 5 blue markers, 3 yellow markers, and 3 green markers. If Maria pulls out a marker without looking, what is the probability he will NOT pull out a blue marker?

• 5/10
• 1/3
• 4/15
• 2/3

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Without looking, Ashley selected a tile from the tiles shown.  What is the probability she will NOT choose a prime number? ( A prime number is any number with 1 and itself as factors)

• ⅗
• ⅖
• ½
• 4/9

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7