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A sample of 300 adults is selected. The contingency table below

shows their registration status and their preferred source of information on current events.


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1. If an adult is selected at random, what is the probability that he/she prefers to get his/her current information from the radio? (2 pt)

2. If an adult is selected at random, what is the probability that he/she is a registered voter who does not prefer to get his/her current information from the newspapers? (2 pts)

3. If an adult is selected at random, what is the probability that he/she is not a registered voter or prefers to get his/her current information from radio? (2 pt)

4. If a randomly selected adult is not a registered voter, what is the probability that he/she prefers to get his/her current information from the internet? (2 pts)

5. What is the probability that an adult who prefers to get his/her current information from the radio will be a registered voter? (2 pts)

6. Is the preferred source of current information independent of the voting registration status? (4 pts)

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Top Answer

1) P(RADIO) = 0.3 2) P(registered voter AND newpaper NOT) = 0.42 3) P(not registered user OR radio) = 0.63 4) P(internet... View the full answer

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