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Math 214, Exam 2, Spring 2005, page 1 of 3
Math 214 Exam 3 Spring 2005 Name____________________________
Instructions: Please do all work in the space provided as much as possible. If you use additional paper,
please write "see attached" and number your problems clearly. Show all work! Correct answers without
supporting work and/or explanation may not receive full credit. Point values are in brackets [ ].
1a) [5] You flip a coin twice. What is the probability of getting at least one head?
b) [6] Explain (in words) the complement of "getting at least one head".
c) [6] You flip a coin three times. What is the probability of getting at least one head?
2. [6 each] For each of the following statements, determine whether the given statement is sensible and
explain why it is or is not.
a) A study of 500 randomly selected school bus routes showed that 480 arrived on time. It is unusual
that a school bus arrives late.
b) The fund-raising ...

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