quiz2 - STA 4321/5325 - Spring 2010 Quiz 2 - January 29...

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Unformatted text preview: STA 4321/5325 - Spring 2010 Quiz 2 - January 29 Name: There are five problems in this quiz. Each problem has exactly one correct answer. Problem 1 The probability that Traver eats breakfast and gets to work on time is 0.2. The probability that he eats breakfast is 0.4. If Traver eats breakfast, what is the probability that he is on time for work? (a) 0.6 (b) 0.2 (c) 0.08 (d) 0.5 Problem 2 Let A and B be two independent events such that P (A) = 0.4 and P (B ) = 0.6. Then P (A ∩ B ) is equal to (a) 1 (b) 0.2 (c) 0.24 (d) 0.67 Problem 3 If A and B are mutually exclusive and independent events, then it is always true that (a) P (A) = 0 and P (B ) = 0 (b) P (A) = 0 or P (B ) = 0 (c) P (A) = 0.5 and P (B ) = 0.5 (d) P (A) = P (B ) 1 ¯ Problem 4 Let A and B be two events. Remember that the set B denotes the complement of ¯ |A) is equal to the set B . Then P (B |A) + P (B (a) P (A) (b) P (B ) (c) 0 (d) 1 Problem 5 Let A and B be two independent events in sample space S . Then P (A ∩ B ) = P (A|B )P (B |S ) This statement is (a) True (b) False 2 ...
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This note was uploaded on 06/05/2011 for the course STA 4321 taught by Professor Staff during the Spring '08 term at University of Florida.

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quiz2 - STA 4321/5325 - Spring 2010 Quiz 2 - January 29...

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