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Stat 201 Quiz3&amp;Ans (2003)

# Stat 201 Quiz3&amp;Ans (2003) - STAT 201 Quiz 3 Student...

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May 30, 2003 Name: Student #: Show work for all calculations. You need NOT use a calculator. e.g. You may leave 1 2 + 2 5 × 0 . 4 as your Fnal answer. I randomly select (with replacement) two students from the Stat 201 class. I’m interested in whether each shares my birthday. Assume each random selection is just like randomly selecting a day out of 365 in a calendar year. 1. Compute the probability of the following events: (a) (1 pt) A = { the Frst selected student shares my birthday } (b) (1 pt) B = { both students share my birthday } (c) (2 pts) C = { only one of the two students shares my birthday } 2. (1 pt) The complement of an event E is deFned as E c = { “opposite” of E } so that P ( E ) + P ( E c ) = 1. Therefore, E and E c are (circle your answer): (a) independent. (b) mutually exclusive. (c) not mutually exclusive. (d) none of the above. 3. Take events A, B , and C from Question 1. (a)

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Stat 201 Quiz3&amp;Ans (2003) - STAT 201 Quiz 3 Student...

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