+ (add) - (subtract) * (multiply) ÷ (divide)

Question

Calculate the probability of an independent compound event, using "and" or "then".
Calculate the probability of a dependent compound event, using "and" or "then".
Calculate the probability of a compound event, using "or".

Answer 1

To calculate the probability of an independent compound event using "and", you would multiply the probabilities of each individual event occurring.

For example, if the probability of event A occurring is 0.3 and the probability of event B occurring is 0.6, the probability of both events A and B occurring together would be 0.3 * 0.6 = 0.18.

To calculate the probability of a dependent compound event using "and", you would multiply the probability of the first event occurring by the probability of the second event occurring given that the first event has already occurred.

For example, if the probability of event A occurring is 0.4 and the probability of event B occurring given that event A has already occurred is 0.5, the probability of both events A and B occurring together would be 0.4 * 0.5 = 0.2.

To calculate the probability of a compound event using "or", you would add the probabilities of each individual event occurring and subtract the probability of both events occurring together.

For example, if the probability of event A occurring is 0.3 and the probability of event B occurring is 0.5, the probability of either event A or event B occurring would be 0.3 + 0.5 - (0.3 * 0.5) = 0.62.