Critical thinking: You are told there are 4 possible events that may occur. Even A has a 25% chance of occurring, event B has a probability of 1/5 and events C and D have an equal likelihood of occurring. What step would you take in order to find the probabilities of events C and D?

Question

UnknownPerson07 · Answer

@vocaloid

Vocaloid · Answer

There are only 4 possible outcomes so all the probabilities must sum to 1. They give you probabilities A and B so you’d subtract 1 - probability A - probability B.

The remaining quantity is the sum of probabilities C + D.

They also tell you that C and D have equal probabilities so you can simply divide the previous quantity by 2 to get each probability C and D.

UnknownPerson07 · Answer

@vocaloid wrote:

There are only 4 possible outcomes so all the probabilities must sum to 1. They give you probabilities A and B so you’d subtract 1 - probability A - probability B. The remaining quantity is the sum of probabilities C + D. They also tell you that C and D have equal probabilities so you can simply divide the previous quantity by 2 to get each probability C and D.

Thank you for the help :)