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Unformatted text preview: Statistics 350 Example Homework
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1. a. b. c. d. Chapter 1 (pg 9) Exercise 1.1. ___________________________________ ____________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ 2. Explain the difference between a population and a sample. 3. a. Chapter 1 (pg 10) Exercise 1.12 (Show your work!) The population for this survey is ... b. Approximate margin of error = c. 4 A simple random sample of 115 parents of school-aged children (either mom or dad) is taken from a large metropolitan area on the East coast to estimate the proportion of parents whom are concerned about the safety of their children on the school bus and agree with the idea that safety belts should be required on school busses. When interviewed, 99 parents in the sample responded that they are very concerned. The response variable being measured for this question could be called Concern status regarding safety of children. What type of variable is concern status? Categorical Quantitative a. b. What proportion of parents in the sample is concerned about the safety of their children on the school bus? ...
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This note was uploaded on 03/27/2008 for the course STAT 350 taught by Professor Gunderson during the Winter '08 term at University of Michigan.
- Winter '08