Unit 8 Probability (first half)

What is a outcome?

• an activity in which results are observed and recorded

• the probability that the OPPOSITE of an event will occur

• set of all possible outcomes

• a result of one trial of an experiment

What is a sample space?

• an activity in which results are observed and recorded

• the probability that the OPPOSITE of an event will occur

• set of all possible outcomes

• a result of one trial of an experiment

Which of the following describes theoretical probability?

• Perform a situation and count the number of possibilities
• Use trials to count the number of desired outcomes
• Perform an experiment to determine the probability of an event
• Use a formula to determine the expected probability of an event

Which of the following describes experimental probability?

• Perform a situation and count the number of possibilities
• Use trials to count the number of desired outcomes
• Perform an experiment to determine the probability of an event
• Use a formula to determine the expected probability of an event

Jon starts asking students what subject they like most at school (Math or History). Out of 10 students, 8 of them say math (of course). Jon asks another student. Which response below is MOST LIKELY?

• Math

• History

There are 3 red cards and 2 blue cards in a bag. Christine pulls out a blue card and does not return it to the bag. What is the probability he will pull 2 blue cards? (Decimal)

• 0.1

• 0.5

• 0.12

• 0.13

When rolling a die, what's the probability of rolling a 2?

• $\frac{1}{5}$

• $\frac{1}{6}$

• $\frac{1}{2}$

• $\frac{2}{6}$

When rolling a die, what is the probability of not rolling a 2?

• $\frac{1}{5}$

• $\frac{1}{6}$

•  $\frac{5}{6}$ 

• $\frac{2}{6}$

P(Yellow) =

• $\frac{2}{7}$

• $\frac{3}{8}$

• $\frac{2}{6}$

• $\frac{1}{4}$

Taryn spins the spinner with sections marked 1-4 and rolls a number cube, with faces numbered 1 to 6. What is the probability of spinning a 1 and rolling an odd number? (Percent)

• 1%

• 5%

• 12%

• 12.5%