4. You have two coins. Coin A comes up heads with probability 1/4. Coin B comes up heads with probability 1/2. You choose one of these coins randomly and then you fip it 3 times.
申論題內容
(b) (4%) If you observe 3 tails, what is the probability that you have
chosen Coin A?
阿摩線上測驗
登入