A sociologist investigated the primary sources of daily news chosen by residents in different living environments. They surveyed 430 individuals to identify whether there is an association between residential area (urban vs rural) and primary news source. The results are summarized in the table below:
Table displaying primary news sources of residents
| Print Newspapers | Television | Social Media | Online News Sites | Radio | |
|---|---|---|---|---|---|
| Urban residents | 12 | 38 | 75 | 82 | 13 |
| Rural residents | 28 | 65 | 34 | 51 | 32 |
Once the 'degrees of freedom' (df) has been calculated for this statistical test, outline how it is used to determine whether the association between residential area and primary news source is statistically significant.
