MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Just need (d) and (e)

The contingency table below shows the results of a survey of video viewing habits by age. | Viewer Age | Mobile/Laptop Device | TV Screen | Row Total | |------------|----------------------|-----------|-----------| | 18–34 | 40 | 23 | 63 | | 35–54 | 12 | 12 | 24 | | 55+ | 5 | 8 | 13 | | Column Total | 57 | 43 | 100 | Find the following probabilities or percentages: (a) Probability that a viewer is aged 18–34. (Round your answer to 2 decimal places.) Probability: \_\_ 0.63 (b) Probability that a viewer prefers watching videos on a TV screen. (Round your answer to 2 decimal places.) Probability: \_\_ 0.43 (c) Percentage of viewers who are 18–34 and prefer videos on a mobile or laptop device. Percentage of viewers: \_\_ 40% (d) Percentage of viewers given they are 18–34 who prefer videos on a mobile or laptop device. (Round your answer to 2 decimal places.) Percentage of viewers: \_\_ (e) Percentage of viewers who are 35–54 or prefer videos on a mobile or laptop device. Percentage of viewers: \_\_ (Note: The missing values require calculation based on the provided data.)
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Transcribed Image Text:The contingency table below shows the results of a survey of video viewing habits by age. | Viewer Age | Mobile/Laptop Device | TV Screen | Row Total | |------------|----------------------|-----------|-----------| | 18–34 | 40 | 23 | 63 | | 35–54 | 12 | 12 | 24 | | 55+ | 5 | 8 | 13 | | Column Total | 57 | 43 | 100 | Find the following probabilities or percentages: (a) Probability that a viewer is aged 18–34. (Round your answer to 2 decimal places.) Probability: \_\_ 0.63 (b) Probability that a viewer prefers watching videos on a TV screen. (Round your answer to 2 decimal places.) Probability: \_\_ 0.43 (c) Percentage of viewers who are 18–34 and prefer videos on a mobile or laptop device. Percentage of viewers: \_\_ 40% (d) Percentage of viewers given they are 18–34 who prefer videos on a mobile or laptop device. (Round your answer to 2 decimal places.) Percentage of viewers: \_\_ (e) Percentage of viewers who are 35–54 or prefer videos on a mobile or laptop device. Percentage of viewers: \_\_ (Note: The missing values require calculation based on the provided data.)
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