Sampling Error

1.1. Briefly describe the difference between observational and experimental data.

2.2. a. Briefly describe how you might design a study to investigate the relationship between smoking and lung cancer.

b. Is your study in Part a observational or experimental? Explain why.

3.3. List five important points to consider when designing a questionnaire.

4.4. a. Describe why the Literary Digest poll of 1936 has become infamous.

b. What caused this poll to be so wrong?

5. A statistics practitioner would like to conduct a survey to ask people their views on a proposed new shopping mall in their
community. According to the latest census, there are 800 households in the community. The statistician has numbered each
household (from 1 to 800), and she would like to randomly select 25 of these households to participate in the study. Use Excel to generate the sample.
6. The operations manager of a large plant with four departments wants to estimate the person hours lost per month due to
accidents. Describe a sampling plan that would be suitable for estimating the plant-wide loss and for comparing departments.

6.7. Is it possible for a sample to yield better results than a census? Explain.

8. Explain the difference between sampling error and non-sampling error.

Record all on word document.

Do you need help with this assignment or any other? We got you! Place your order and leave the rest to our experts.

Quality Guaranteed

Any Deadline

No Plagiarism