Conditional Probability
Calculating Conditional Probabilities (b) What is the probability that the day chosen was a Sunny day, P(S)? The sample space is still the 30 days under discussion. It was sunny on 9 + 1 = 10 of them so P(S) = 10 30 ˇ33%. (c) What is P G S? P G S = P(G\S) P(S). Hence we need to calculate P(G\S). Here the sample space is still
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