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.) (c) Percentage of viewers who are 18 to 34 and prefer videos on a mobile or laptop device.
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.) (c) Percentage of viewers who are 18 to 34 and prefer videos on a mobile or laptop device.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The
| 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.)
(c) Percentage of viewers who are 18 to 34 and prefer videos on a mobile or laptop device.
(d) Percentage of viewers given they are 18 to 34 who prefer videos on a mobile or laptop device. (Round your answer to 2 decimal places.)
(e) Percentage of viewers who are 35 to 54 or prefer videos on a mobile or laptop device.
Expert Solution
As per guideline expert have to answer first three subparts only.
| Video Viewing Platform Preferred | Row total | ||
|---|---|---|---|
| Age | Mobile/laptop | tv screen | |
| 18 to 34 | 35 | 38 | 73 |
| 35 to 54 | 9 | 9 | 18 |
| 55+ | 3 | 6 | 9 |
| Column Total | 47 | 53 | 100 |
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