Part I: Probability For each of the following problems, you should write your answer as an expression. Do not give the final numeric value. For example, you should write C(4,2)/24 instead of 0.375. 1. A coin is flipped 8 times in a row (assume all outcomes are equally likely). 1.1 What is the probability that it lands on heads exactly four times? 1.2 What is the probability that it lands on heads at least twice? 1.3 What is the probability that it lands on heads more often than tails?

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