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Chapter 1: Sampling and Data

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Introductory Statistics
Pages: 5 - 66
Introductory Statistics

Introductory Statistics

Book edition OER 2018
Author(s) Barbara Illowsky, Susan Dean
Pages 902 pages
ISBN 9781938168208

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Illustration

115 Questions for Chapter 1: Sampling and Data

  1. Describe the unethical behavior, if any, in each example and describe how it could impact the reliability of the resulting data. Explain how the problem should be corrected. A study is commissioned to determine the favorite brand of fruit juice among teens in California.

    Found on Page 39

  2. Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once they start the treatment. Two researchers each follow a different set of 40 patients with AIDS from the start of treatment until their deaths. The following data (in months) are collected.

    Found on Page 48

  3. A study was done to determine the age, number of times per week, and the duration (amount of time) of residents using a local park in San Antonio, Texas. The first house in the neighborhood around the park was selected randomly, and then the resident of every eighth house in the neighborhood around the park was interviewed.

    Found on Page 48

  4. Table 1.26 contains the total number of deaths worldwide as a result of earthquakes from 2000 to 2012.

    Found on Page 49

  5. Determine what the key terms refer to in the following study. We want to know the average (mean) amount of money spent on school uniforms each year by families with children at Knoll Academy. We randomly survey 100 families with children in the school. Three of the families spent $65, $75, and $95, respectively.

    Found on Page 8

  6. 1.10 The registrar at State University keeps records of the number of credit hours students complete each semester.

    Found on Page 13

  7. 1.11 You are going to use the random number generator to generate different types of samples from t

    Found on Page 22

  8. 1.12Determine the type of sampling used (simple random, stratified, systematic, cluster, or convenience). A high school principal polls 50freshmen, 50sophomores, 50juniors, and 50seniors regarding policy changes for after-school activ

    Found on Page 23

  9. 1.13A local radio station has a fan base of 20,000listeners. The station wants to know if its audience would prefer

    Found on Page 24

  10. 1.14Table1.13shows the amount, in inches, of annual rainfall in a sample

    Found on Page 30

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