According to a survey by Nielsen and Yahoo, 86% of all mobile phone owners use the Internet on their handset while watching TV. Suppose that 20% of those who use the Internet on their mobile phone while watching TV to access a social networking site. Assuming that these fi gures are true for all mobile phone owners, if a mobile phone owner is randomly selected, determine the following probabilities:

a. Th e mobile phone owner uses the Internet on her handset while watching TV and accesses a social networking site.

b. Th e mobile phone owner does not access a social networking site given that she uses the Internet on her handset while watching TV.

c. Th e mobile phone owner does not access a social networking site and does use the Internet on her handset while watching TV.