A survey about social media reported that 81% of B2B marketers (marketers that focus primarily on attracting businesses) plan to increase their use of social media, as compared to 54% of B2C marketers (marketers that primarily target consumers). The survey was based on 1 comma 264 B2B marketers and 1 comma 743 B2C marketers. The accompanying table summarizes the results. Complete parts (a) through (d) below. 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? b. Suppose you know that the marketer is a B2C marketer. What is the probability that he or she plans to increase use of social media? c. Are the two events, increase use of social media and business focus, independent? Explain.
Increase Social Media Use B2B Marketer
B2C Marketer Total
Yes 1029 943 1972
No 235 800 1035
Total 1264 1743 3007
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