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(a) Describe the sample space Ω. (b) What is the probability that three tosses will be required? (assume that tosses are independ Sere 5. (Wasserman : Exercise 1.10.17) Prove that P(ABC) P(A I BC)P(B I C)P(C). 6. (Wasserman : Exercise 1.10.19) Suppose that 30 percent of computer owners use a Macintosh percent use Windows, and 20 percent use Linux. Suppose that 65 percent of the Mac users
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5. P(ABC) PABC)P(BC) provided P(BC) > O -P ABC)P BC)PC) provided P(BC)0 and P(C) >0 Note that P(BC)- P BC)P(C) and P(BC) >0 P

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