probability/probability models

What is experimental probability?

• The likelihood of an event occurring based on theoretical calculations.

• The ratio of the number of times an event occurs to the total number of trials or experiments conducted.

• The probability of an event occurring in a single trial.

• The probability that an event will not occur in a given experiment.

What is the theoretical probability of an event?

• Theoretical probability is the ratio of the number of favorable outcomes to the total number of possible outcomes.

• Theoretical probability is the likelihood of an event occurring based on past data.

• Theoretical probability is the same as experimental probability.

• Theoretical probability is calculated by dividing the number of unfavorable outcomes by the total outcomes.

If the probability of an event is 0.25, what is the probability of the event not occurring?

• 0.50

• 0.75

• 0.25

• 0.10

What is the probability of spinning green if a spinner has 4 equal sections: red, blue, green, and yellow?

• 1/2

• 1/3

• 1/4

• 1/5

If you spin a spinner with 6 equal sections numbered 1 to 6, what is the probability of spinning an even number?

• 1/3

• 1/4

• 1/2

• 2/3

What is the sum of the probabilities of all possible outcomes of an event?

• 0 (or 0%)

• 0.5 (or 50%)

• 1 (or 100%)

• 2 (or 200%)

If you spin a spinner 90 times and the probability of landing on a number is 1/6, how many times should you expect to land on that number?

• 10 times

• 12 times

• 15 times

• 18 times

If a coin is tossed 10 times and results in 7 heads and 3 tails, what is the experimental probability of getting tails?

• 1/2

• 1/3

• 3/10

• 2/5

If a spinner has 5 sections and one section is labeled 'D', what is the probability of not landing on 'D'?

• 4/5

• 5/6

• 1/5

• 3/5

In a bag of 24 animals, if there are 12 cats and 12 reptiles, what is the probability of selecting a cat or reptile?

• 0.5

• 1

• 0.25

• 0.75