Example 2 the town manager selects 10 homes in one

Info icon This preview shows pages 6–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Example 2: The town manager selects 10 homes in one neighborhood and sends an interviewer to the homes to determine household incomes. Example 3: An anti-gun advocacy group wants to estimate the percentage of people who favor stricter gun laws. They conduct a nation-wide survey of 1,203 randomly selected adults 18 years old and older. The interviewer asks the respondents, “Do you favor harsher penalties for individuals who sell guns illegally?” Example 4: Cold Stone Creamery is considering opening a new store in Marion. Before opening the store, the company would like to know the percentage of households in Marion that regularly visit an ice cream shop. The market researcher obtains a list of households in Marion and randomly selects 150 of them. He mails a questionnaire to the households that ask about their ice cream eating habits and favor preferences. Of the 150 questionnaires mailed, 14 are returned. Example 5: The owner of shopping mail wishes to expand the number of shops available in the food court. She have a market researcher survey mall customers during weekday mornings to determine what types of food the shoppers would like to see added to the food court. Example 6: The owner of radio station wants to know what their listeners think of the new format. He has the announcers invite the listeners to call in and voice their opinion. Homework: Day 2: pg 347-51 problems 5.15-17, 5.20, 5.22, 5.24, 5.28-30
Image of page 6

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Chapter 5: Producing Data Section 5.2: Designing Experiments Knowledge Objectives: Students will: Define experimental units, subjects, and treatment . Define factor and level . Explain the major advantage of an experiment over an observational study . Explain the purpose of a control group . Explain the difference between control and a control group . List the three main principles of experimental design . Define a completely randomized design . Define a block . Construction Objectives: Students will be able to: Given a number of factors and the number of levels for each factor, determine the number of treatments . Give an example of the placebo effect . Discuss the purpose of replication, and give an example of replication in the design of an experiment. Discuss the purpose of randomization in the design of an experiment. Given a list of subjects, use a table of random numbers to assign individuals to treatment and control groups. Explain what it means to say that an observed effect is statistically significant . For an experiment, generate an outline of a completely randomized design. Give an example of a block design in an experiment. Explain how a block design may be better than a completely randomized design. Give an example of a matched pairs design, and explain why matched pairs are an example of block designs. Explain what is meant by a study being double blind . Give an example in which lack of realism negatively affects our ability to generalize the results of a study.
Image of page 7
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern