Business Focus B2C B2B Total A survey of B2B marketers (marketers that focus primarily on attracting businesses) and B2C marketers (marketers that primarily target consumers) was based on 1000 B2B Increase use of social media marketers and 1000 B2C marketers. The table to the right summarizes the results. Yes Complete parts (a) through (c) below. No Total 504 496 1000 761 239 1000 1265 735 2000 a. Suppose you know that the marketer is a B2B marketer. What is the probability that he or she plans to increase use of social media?

The probability that he or she plans to increase use of social media is 0.504. (Simplify your answer. Round to three decimal places as needed.)

b. Suppose you know that the marketer is a B2C marketer. What is the probability that he or she plans to increase of social media? The probability that he or she plans to increase use of social media is (Simplify your answer. Round to three decimal places as needed.)