The contingency table below shows the results of a survey of video viewing habits by age.       Video Viewing Platform Preferred     Viewer Age Mobile/Laptop Device   TV Screen   Row Total 18–34 40   23             63   35–54 12   12             24   55+ 5   8     8       13   Column Total 57   43     54       100       Find the following probabilities or percentages:   (a) Probability that a viewer is aged 18–34. (Round your answer to 2 decimal places.)   Probability               (b) Probability that a viewer prefers watching videos on a TV screen. (Round your answer to 2 decimal places.)   Probability               (c) Percentage of viewers who are 18–34 and prefer videos on a mobile or laptop device.   Percentage of viewers             %

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The contingency table below shows the results of a survey of video viewing habits by age.
 

    Video Viewing Platform Preferred    
Viewer Age Mobile/Laptop Device   TV Screen   Row Total
18–34 40   23             63  
35–54 12   12             24  
55+ 5   8     8       13  
Column Total 57   43     54       100  
 

 
Find the following probabilities or percentages:
 
(a) Probability that a viewer is aged 18–34. (Round your answer to 2 decimal places.)
 
Probability            
 
(b) 
Probability that a viewer prefers watching videos on a TV screen. (Round your answer to 2 decimal places.)
 
Probability            
 
(c) 
Percentage of viewers who are 18–34 and prefer videos on a mobile or laptop device.
 
Percentage of viewers             %
 
(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             %

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