q1solutions - Statistics 20: Quiz 1 Name: Student ID:...

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Statistics 20: Quiz 1 Name: Student ID: Section: (2 pm) (3 pm) September 13, 2006 Instructions: You have 30 minutes to complete the quiz. There are 5 ques- tions worth 2 points apiece for a total of 10 points. Show your work – this means provide a formula, plug in the appropriate numbers, and then give a final solution. You may use a pocket calculator. Do not spend too much time on any particular question at the expense of the others. Good luck! Age Total Population (Millions) 0-10 20 10-20 10 20-45 30 40-70 15 70-95 25 The above table depicts the age distribution for the population inhabiting the island of Statististakia. Each group includes the left end-point but not the right. (So, for instance, the first group includes people between the age of 0 and 1, but does not include anyone 10 or older.) Use this information to answer Questions 1-3. 1
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1. Are there more 2 year olds or 71 year olds on the island of Statistis- takia?? Number of 2 year olds:
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This note was uploaded on 04/02/2008 for the course STAT 20 taught by Professor Staff during the Spring '08 term at University of California, Berkeley.

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q1solutions - Statistics 20: Quiz 1 Name: Student ID:...

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