Chapter 1: Q 15. (page 32)
Incomes of College Students 'Parents. A researcher wants to estimate the average income of parents of college students. To accomplish that, he surveys a sample of 250 students at Yale. Is this a representative sample? Explain your answer.
No. The sample is not representative.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
In Exercises 1.7-1.12, classify each of the studies as either descriptive or inferential. Explain your answers.
Home Sales. Zillow.com is an online database that provides real estate information for U.S. homes that are for rent or sale. It also presents statistics on recently sold homes. The following table gives various information on all homes sold in several different cities across the United States for the month of September 2012.
British Backpacker Tourists.Research by G. Visser and C. Barker in " A Geography of British Backpacker Tourists in South Africa " (Geography, Vol . 89, No. 3, pp . 226-239) reflected on the impact of British backpacker tourists visiting South Africa. A sample of British backpackers was interviewed. The information obtained from the sample was used to construct the following table for the age distribution of all British backpackers. Classify this study as descriptive or inferential, and explain your answer.
The Salk Vaccine. In Exercise 1.17 on page 8, we discussed the Salk vaccine experiment. The experiment utilized a technique called double-blinding because neither the children nor the doctors involved knew which children had been given the vaccine and which had been given placebo. Explain the advantages of using double-blinding in the Salk vaccine experiment.
In sampling, explain why obtaining a representative sample is important.
Identify two statistical methods other than a census for obtaining information.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
