Probability

Andrew picks one marble at a time from a box and replaces it. He repeats this process 25 times and records the results in the table. Based on the table, which color marble has an experimental probability of $\frac{1}{5}$ ?

• Yellow

• Red

• Blue

• Green

Probability can be written as ...

• fractions.

• decimals.

• percentages.

• irrational numbers.

Which of the following describes theoretical probability?

• Perform an experiment to determine the probability.

• Perform a simulation and count the number of possible outcomes.

• Use trials to count the number of desired outcomes.

• Determine the expected probability of an event.

Emma is playing a spinning game using the spinner shown. She gets one spin and needs green to win. What's probability that she will NOT win?

• 0.25

• 0.75

• 0.70

• 0.40

In a cup are the numbers 1 to 20. Find the theoretical probability of picking an even number.

• 
  

  $\frac{10}{20}$
  

• $\frac{1}{2}$

• $\frac{1}{20}$

• $\frac{20}{20}$

On a 6-sided die, which is more likely to occur?

• Rolling an odd number.

• Rolling an even number.

• All outcomes are equally likely.

If you roll one die, what is the probability of getting an odd number or a 4. Are the events mutually exclusive or not?

• Mutually exclusive

• Not mutually exclusive

What is the theoretical probability of landing on red?

• 43%

• 33.3%

• 40%

• 36%

Based on this experiment, what is the probability that a girl in athletics is chosen?

• 
  

  $\frac{22}{37}$
  

• $\frac{15}{37}$

• $\frac{11}{40}$

• $\frac{7}{10}$

A bag has 3 red marbles, 2 blue, 1 yellow and 4 green. What is the theoretical probability of pulling a green?

• 40%

• 4%

• 60%

• about 67%