This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A survey is planned to be done by contacting a random sample of people who have bought something ... (Read 154 times)

javeds

  • Hero Member
  • *****
  • Posts: 570
on: Jul 24, 2018
A survey is planned to be done by contacting a random sample of people who have bought something over the Internet; the question would ask whether sales made over the Internet should be taxed or not. The purpose is to estimate the proportion of all Americans who would support an Internet sales tax. Explain why selection bias would be a problem for this survey.

Question 2

The next three questions are based on a survey of 500 students living in campus dormitories. Questionnaires were mailed to each of the 500 students. The questionnaire asked if they had ever stolen a bicycle or not. The sample proportion who said they had stolen a bicycle was used to estimate the proportion of all students on campus who had ever stolen a bicycle. Describe why non-response bias could be a problem for this survey.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mochi09

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 24, 2018
Answer to Question 1

A sample of people would have bought something over the Internet is not representative of the population of all Americans, at least for this question.

Answer to Question 2

The questionnaire was mailed, and students could choose to not respond to the questionnaire.


javeds

  • Hero Member
  • *****
  • Posts: 570
Reply #2 on: Jul 24, 2018
TY


mochi09

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Jul 24, 2018
You're welcome


« previous next »
 

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

The formation of a chimeric gene that is found in people with certain forms of leukemia. The formation of a chimeric gene that is found in people with certain forms of leukemia.
A typical spectrum with peaks representing the peptide fragments generated from a sample A typical spectrum with peaks representing the peptide fragments generated from a sample
Alan Price - Poor People Alan Price - Poor People
John Ahearn, Homage to the People of the South Bronx: Double Dutch at Kelly Street 1: Frieda, ... John Ahearn, Homage to the People of the South Bronx: Double Dutch at Kelly Street 1: Frieda, ...
Sample of an insurance card. Sample of an insurance card.
Do you see animals or people first? Do you see animals or people first?
Video: Neuron Structure Animation

For a complete list of videos, visit our video library