I need help with this question: A fair coin is tossed four times. Compute the probability that the outcome is at least three tails.
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Think you posted in the wrong subforum, not really a university question? What have you tried so far? Some hints: 1. What is the chance on this sequence: tail-tail-tail-head? 2. Differs the answer from the previous question from: tail-head-tail-tail?
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