Flipping Coins Over Time

• Suppose we flip a very biased coin once a second

• If p = 1 / 60, we would expect to have one head and 59 tails each minute, on average

• In some minutes we might have more heads and in some minutes none at all

• To figure out the probability of getting a certain number of heads (k) in a minute, we could use the binomial distribution (n = 60, p = 1 / 60)

• We could add to figure out the cumulative probability of getting less than a number of heads in a minute, e.g., less than 3 heads: Pr(k=0) + Pr(k=1) + Pr(k=2)