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

Viewer age 18 to 34, mobile/laptop Device- 35 ; TV Screen- 38, row total 73.

Viewer age 35 to 54, mobile/laptop Device- 9 ; TV Screen- 9, row total 18.

Viewer age 55+, mobile/laptop Device- 3 ; TV Screen- 6, row total 9.

Find the following probabilities or percentages:

(a) Probability that a viewer is aged 18 to 34. (Round your answer to 2 decimal places.).

Probability-

(b) Probably 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 to 34 and prefer videos on a mobile or laptop device.

Percentage of viewers-

(d) Percentage of viewers given they are 18 to 34 who prefer videos on a mobile or laptop device. (Round your answers to 2 decimal places.)

Percentage of viewers-

(e) Percentage of viewers who are 35 to 54 or prefer videos on a mobile or laptop device.

Percentage of viewers-