A national survey suggests that 25% of U.S. adults have a landline in their residence, 84% have a cell phone, and 21% have both. define the following: L= person has a landline in their residence, C= person has a cell phone. Answer the following questions using proper probability notation.
a) What is the probability that a randomly selected U.S. adult has a landline or a cell phone?
B)What is the probability that a randomly selected U.S. adult does not have a cell phone?
C)What is the probability that a randomly selected U.S adult has a cell phone but not a landline?
D) If a U.S. adult has a cell phone, what is the probability that he has a landline, too?
E) Are having a landline and a cell phone independent events? support your answer appropriately.
