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# Suppose identical tags are placed on both the left ear and ISBN: 9780321629111 32

## Solution for problem 89E Chapter 2

Probability and Statistics for Engineers and the Scientists | 9th Edition

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Problem 89E

Suppose identical tags are placed on both the left ear and the right ear of a fox. The fox is then let loose for a period of time. Consider the two events C1={left ear tag is lost}and C2={left ear tag is lost}. Let ? = P(C1)= P(C2), and assume ?C?1 and ?C?2 are independent events. Derive an expression (involving _) for the probability that exactly one tag is lost, given that at most one is lost (“Ear Tag Loss in Red Foxes,” ?J. Wildlife Mgmt., ?1976: 164–167). [?Hint: ?Draw a tree diagram in which the two initial branches refer to whether the left ear tag was lost.]

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Problem 89E Answer: Step1: We have Suppose identical tags are placed on both the left ear and the right ear of a fox. The fox is then let loose for a period of time. Consider the two events C1={left ear tag is lost} and C2={left ear tag is lost}. Let = P(C1)= P(C2), and assume C1 and C2 are independent events. Our goal is to Derive an expression (involving ) for the probability that exactly one tag is lost, given that at most one is lost. Step2: 1).Let L be the event “left ear tag is lost ” and Let R be...

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##### ISBN: 9780321629111

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