Same topic:
1. Consider all passwords of length 10 made up of numbers,
lower-case letters, and upper-case letters (from the English
alphabet).
a) If you pick such a password at random, what is the likelihood
that it contains exactly 5 lower-case letters?
b) If you pick such a password at random, what is the likelihood
that it contains at most 9 lower-case letters?
2. Suppose you’re an ornithologist who specializes in American
crows (Corvus brachyrhynchos), and you’ve collected data on...