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ID: 3044128 • Letter: P
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Social Media:
Harris Interactive conducted a survey in which they asked adult Americans (18 years or older) whether they used social media (Facebook, Twitter, and so on) regularly. The following table is based on the results of the survey.
If an adult American is randomly selected, what is the probability he or she uses social media?
If an adult American is randomly selected, what is the probability he or she is 45- to 54 years of age?
If an adult American is randomly selected, what is the probability he or she is a 35- to 44 year old social media user?
If an adult American is randomly selected, what is the probability he or she is 35- to 44 years old or uses social media?
18-24 35-44 45-54 55+ Total Use Social Media 117 89 83 49 338 Does Not Use Social Media 33 36 57 66 192 Total 150 125 140 115 530Explanation / Answer
1)
probability he or she uses social media =338/530=0.6377
2)probability he or she is 45- to 54 years of age =140/530=0.2642
3) probability he or she is a 35- to 44 year old social media use =89/530=0.1679
4) probability he or she is 35- to 44 years old or uses social media =(117+89+83+49+36)/530=0.7057
( please revert for any clarification required)
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