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Question
A study was recently conducted in which people were asked to indicate which news medium was their preferred choice for national news. The following data were observed:
| radio | television | newspaper | |
| under 21 | 30 | 50 | 5 |
| 21-40 | 20 | 25 | 30 |
| 41 and over | 30 | 30 | 50 |
Given this data, if we wish to test whether the preferred news source is independent of age, for an alpha = .05 level, the test statistic is computed to be approximately 40.70.
Answer
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