Question
The contingency table below shows the results of a survey of video viewing habits by age. Viewer Age Video Viewing Platform Preferred Row Total Mobile/Laptop
The contingency table below shows the results of a survey of video viewing habits by age.
| Viewer Age | Video Viewing Platform Preferred | Row Total | |
|---|---|---|---|
| Mobile/Laptop Device | TV Screen | ||
| 18 to 34 | 35 | 38 | 73 |
| 35 to 54 | 9 | 9 | 18 |
| 55+ | 3 | 6 | 9 |
| Column Total | 47 | 53 | 100 |
Find the following probabilities or percentages: (a) Probability that a viewer is aged 18 to 34. (Round your answer to 2 decimal places.)
(b) Probability that a viewer prefers watching videos on a TV screen. (Round your answer to 2 decimal places.)
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Geometry And Analysis Of Fractals Hong Kong, December 2012
Authors: De Jun Feng, Ka Sing Lau
1st Edition
3662439204, 9783662439203
