An advertising agency conducted a survey among adults to investigate whether there is a relationship between their income level and their primary source for news. The results are shown in the table below.The agency categorized survey participants into three income levels:low income (less than \$40,000 annually); middle income (between \$40,000 and \$80,000 annually);and high income(above \$80,000 annually). Within each income category, the table shows the number of survey participants who use each type of primary news source.
|Less than \$40,000||Between \$40,000 and \$80,000||Above \$80,000||TOTAL|
|Web version of print newspaper||50||97||112||259|
|Web-only reporting sources||12||60||75||147|
Decide whether the following statements are true or false.
High income adults are more likely to get news from cable TV than low-income adults are to get news from local TV.
Middle income adults make up more than one-third of those who receive their news from TV.
In order to say that the preferred news source and income level are “independent,” it is expected that variations in a particular preferred news source between income levels will be proportional to variations between the total numbers of each income level. If it were true that news source preference was independent of (did not depend on) income, then we would have expected over 100 high- income adults to have chosen local TV for their news source.