Marketersa

Basic Probability 1. How will marketers change their social media use in the near future? A survey by Social Media Examiner reported that 77% of B2B marketers (marketers that focus primarily on attracting businesses) plan to increase their use of LinkedIn, as compared to 54% of B2C marketers (marketers that primarily target consumers). The survey was based on 1,184 B2B marketers and 1,703 B2C marketers. The following table summarizes the results: INCREASE USE BUSINESS FOCUS OF LINKEDIN? B2B B2C Total Yes 912 920 1,832 No 272 783 1,055 Total 1,184 1,703 2.887 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 LinkedIn? d. Why is a marketer who plans to increase use of LinkedIn and is B2C marketer a joint event? Referring to the contingency table above, if a marketer is selected at random, what is the probability that: e. he or she plans to increase use of Linkedin? f. he or she is a B2C marketer? g. he or she plans to increase use of Linkedin or is a B2C marketer? h. Explain the difference in the results in (b) and (c)