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Problem 1.2 As we saw in class, if a sample space S consists of a finite number of outcomes, then it is possible to assign each outcome its own probability. In this special case, the proba bility of an event can be calculated by adding up the probabilities of its individual outcomes. Specifically, if E s1,s2,, Sm), then Additionally, if all outcomes are equally likely, this formula simplifies to P[El-# of outcomes in E ] _ #Of outcomes in S (a) Say that we rol a four-sided die with faces 1, 2,3,4) followed by a five-sided die with faces 1,2, 3, 4,5 All outcomes are equally likely. Write down the sample space S for this experiment as well as the probability for each outcome. (b) Calculate the probability of both rolls being odd (c) Calculate the probability that the sum of the rolls is 6 (d) Calculate the probability that the sum of the rolls is 6 or both rolls are odd. (e) Verify your answer for part (d) using the inclusion-exclusion principle.
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