Probability is simply how likely something is to happen. Whenever we’re unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are. The analysis of …

You've experienced probability when you've flipped a coin, rolled some dice, or looked at a weather forecast. Go deeper with your understanding of probability as you learn about theoretical, …

This formula says that we can multiply the probabilities of two events, but we need to take the first event into account when considering the probability of the second event.

In this article, we’ll review some probability basics, including how to calculate the probability of two independent events both occurring (event X and event Y) or the probability of either of two mutually …

Find the probability that a randomly selected student prefers dogs or prefers cats. Enter your answer as a fraction or decimal.

Let's learn a little bit about the law of large numbers, which is on many levels, one of the most intuitive laws in mathematics and in probability theory. But because it's so applicable to so many things, it's …

The probability of getting one condition of an object being a member of set a, or a member of set b is equal to the probability that it is a member of set a, plus the probability that is a member of set b, …

What is P (A) , the probability that a customer orders coffee? What is P (B) , the probability that a customer orders pie? What is P (A and B) , the probability that a customer orders coffee and pie? …

We can use the general multiplication rule to find the probability that two events both occur when the events are independent.

The probabilities that the pollution level is "severe" are 0.4 , 0.3 and 0.9 for cities X, Y and Z respectively. A city is chosen at random and its pollution level measured. Find the probability that the …