How will marketers change their social media use in the near future? A survey by Social Media Examiner reported that 76% of B2B marketers (marketers that focus primarily on attracting businesses) plan to increase their use of Linkedln, as compared to 55% of B2C marketers (marketers that primarily target consumers). The survey was based on 1,945 B2B marketers and 1,868 B2C marketers. The following table summarizes the results:

a. Give an example of a simple event.
b. Give an example of a joint event.
c. What is the complement of a marketer who plans to increase use of Linkedln?
d. Why is a marketer who plans to increase use of Linkedln and is a B2C marketer a joint event?