The following data represent the medal tallies of the top three countries at the 2014 Winter Olympics in Sochi, Russia

Gold

Silver

Bronze

Russia

13

11

9

United States

9

7

12

Norway

11

5

10

(a)If a medal is randomly selected, what is the probability that it is gold?

(b)If a medal is randomly selected, what is the probability that it is silver or was won by Russia?

For each problem, show your work and give an answer rounded to three significant figures.