How will marketers change their social media use in the near future? A survey by Social Media Examiner of B2B marketers (marketers that focus primarily on attracting businesses) and B2C marketers ( marketers that primarily target consumers) was based on 1,331 B2B marketers and 1,694 B2C marketers. The following table summarizes the results:

a. Suppose you know that the marketer is a B2B marketer. What is the probability that he or she plans to increase use of LinkedIn?
b. Suppose you know that the marketer is a B2C marketer. What is the probability that he or she plans to increase use of LinkedIn?
c. Are the two events, increase use of LinkedIn and business focus, independent? Explain.

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INCREASE USE OF LINKEDIN? Yes No Total BUSINESS FOCUS B2B B2C Total 1,038 915 293 779 1072 1,953 1,33 943,025