Can you please review and help?

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 30 33 63 35-54 13 13 26 55+ 3 8 11 Column Total 46 54 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 0.54 (c) Percentage of viewers who are 18-34 and prefer videos on a mobile or laptop device. Percentage of viewers 0.48 % (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 0.76 % (e) Percentage of viewers who are 35-54 or prefer videos on a mobile or laptop device. Percentage of viewers %