The following chart shows the number of customer complaints from three regions of an organization for two separate years.

2018 2017

Northeast region 6,493 3,401

Southeast region 732 2,513

Central region 3,706 1,082

Find the probability for each question.

• What is the probability that a complaint was from the Southeast region, given it was in 2017?
• What is the probability that a complaint was from the Central region, given it was in 2018?
• What is the probability that a given complaint did not occur in 2018 and was not from the Southeast region?
• What is the probability that two complaints chosen at random were both from the Northeast region?