exam1_practice

# exam1_practice - Practice Problems for Exam I(Chapters 14 1...

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Practice Problems for Exam I (Chapters 1–4) 1. A particular airline has 10 a.m. ﬂights from Chicago to NY, Atlanta, and LA. Let A denote the event that the NY ﬂight is full and deﬁne events B and C analogously for Atlanta and LA, respectively. Suppose P ( A ) = 0 . 6 ,P ( B ) = 0 . 5 ,P ( C ) = 0 . 4 , and the three events are independent. What is the probability that only the NY ﬂight is full? A. 0.12 B. 0.88 C. 0.18 D. 0.10 E. 0.60 2. 1% of all individuals in a certain population are carriers of a particular disease. A di- agnostic test for this disease has a 90% detection rate for carriers and a 5% rate for non-carriers. Suppose the test is applied independently to two diﬀerent blood samples from the same randomly selected individual. What is the probability that both tests yield positive result? A. 0.01 B. 0.89 C. 0.90 D. 0.95 E. 0.06 3. When circuit boards used in the manufacture of compact disc players are tested, the

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## This note was uploaded on 10/14/2008 for the course STAT 211 taught by Professor Parzen during the Spring '07 term at Texas A&M.

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exam1_practice - Practice Problems for Exam I(Chapters 14 1...

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