In Olympic speed-skating, 2 Americans called Bob and Joe are competing. Their results are normally distribuated, with means of 120 and 121 seconds, respectively, and standard deviation of 3 and 5 seconds, respectively. the faster non- American skater ( among everyone exect Bb and Joe) records a time of 118 seconds ( the fasterst time wins, of course).
a. Sketch the distribution of bob's results, and show graphically ( with numbers added ) how likely he is to finish at least second?
b. How likely is it that an American winds the Gold Medal?
c. How likely is it that Americans win both the gold and silver?