Answer:
The probability of randomly selecting someone who does not believe that Marilyn Monroe had an affair with JFK is P=0.3061.
Step-by-step explanation:
The probability of randomly selecting someone who does not believe that Marilyn Monroe had an affair with JFK is calculated as the complement of the probability of randomly selecting someone who does believe that Marilyn Monroe had an affair with JFK. This last value is the one estimated from the poll: 0.6939.
Then, the probability of randomly selecting someone who does not believe that Marilyn Monroe had an affair with JFK is:
[tex]P=1-0.6939=0.3061[/tex]