Intro to Probability

If a die is rolled, what is the probability of rolling a number greater than 4?

• 1/2

• 1/3

• 1/4

• 2/3

What is the probability of choosing a letter other than 'A' from the word 'ALGEBRA'?

• 3/7

• 4/7

• 5/7

• 6/7

What is the difference between independent and dependent events?

• Independent events affect each other's outcomes, while dependent events do not.

• Independent events do not affect each other's outcomes, while dependent events do.

• Independent events are always more likely to occur than dependent events.

• Dependent events are completely unrelated to independent events.

What is the probability of not rolling a 2 on a six-sided die?

• 1/2

• 1/3

• 5/6

• 2/6

What is the probability of getting heads when flipping a fair coin?

• 1/4

• 1/2

• 3/4

• 1/3

What is experimental probability?

• It is the probability based on theoretical models and assumptions.

• It is the probability based on the actual results of an experiment, calculated as the number of successful outcomes divided by the total number of trials.

• It is the probability that is always equal to 1.

• It is the probability that cannot be calculated.

What is the probability of both marbles being purple when drawing without replacement from a box of 5 purple marbles?

• 1/3

• 2/9

• 1/5

• 3/10

What is the law of large numbers?

• The law of large numbers states that as the number of trials increases, the experimental probability will get closer to the theoretical probability.

• The law of large numbers states that the average of a sample will always equal the average of the population.

• The law of large numbers states that outcomes of random events will always be predictable in the long run.

• The law of large numbers states that increasing the sample size will decrease the variability of the sample.

What is probability?

• A measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

• A method to predict future events based on past occurrences.

• A statistical tool used to analyze data sets.

• A way to ensure that events will happen with certainty.

How do you calculate the probability of an event?

• Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

• Probability = (Total number of possible outcomes) / (Number of unfavorable outcomes).

• Probability = (Number of outcomes) x (Total number of events).

• Probability = (Number of favorable outcomes) + (Total number of possible outcomes).