# Question: When is the following addition rule used to find the

When is the following addition rule used to find the probability of the union of two events A and B?

P(A or B) = P(A) + P(B)

Give one example where you might use this formula.

P(A or B) = P(A) + P(B)

Give one example where you might use this formula.

## Answer to relevant Questions

Find P(A or B) for the following. a. P(A) = .66, P(B) = .47, and P(A and B) = .33 b. P(A) = .84, P(B) = .61, and P(A and B) = .55 Reconsider Problem 14. If one of these 200 students is selected at random, what is the probability that the selected student is a female or an out-of-state student? The following table gives the probability distribution of a discrete random variable x. Find the following probabilities. a. P(x = 3) b. P(x < 2) c. P(x > 4) d. P(1 < x < 4) e. Probability that x assumes a value less than ...Two teams, A and B, will play a best-of-seven series, which will end as soon as one of the teams wins four games. Thus, the series may end in four, five, six, or seven games. Assume that each team has n equal chance of ...Brad Henry is a stone products salesman. Let x be the number of contacts he visits on a particular day. The following table gives the probability distribution of x. Let y be the total number of contacts Brad visits on two ...Post your question