Question 12
A coin is flipped until two tails have occurred. If the first tail occurs on flip $a$ and the second on flip $b$, compute the probability that $b=4a$.
For this conditional self-study model, assume a fair coin and independent flips. The source prompt does not explicitly state these assumptions.
For this conditional self-study model, assume a fair coin and independent flips. The source prompt does not explicitly state these assumptions.