This topic contains a solution. Click here to go to the answer

Author Question: In a poll of students in grades 6 through 12, 13 reported that someone had seriously threatened to ... (Read 74 times)

craiczarry

  • Hero Member
  • *****
  • Posts: 527
In a poll of students in grades 6 through 12, 13 reported that someone had seriously threatened to shoot them in the past year. This percentage was based on a sample of 2,508 students in 96 schools for which the principal had to give consent before the students could be surveyed. Give one possible explanation of why the sample may not have been representative of the population of all students in grades 6 through 12.

Question 2

A survey of people applying for a mortgage showed that among white people with a bad credit rating, 90 were approved for mortgages, whereas among black people with a bad credit rating, 81 were approved. What confounding variable could also explain the apparent racial difference in the percentage of approved mortgages?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Swizqar

  • Sr. Member
  • ****
  • Posts: 357
Answer to Question 1

The principals who taught in high crime neighborhoods may have been more willing to participate in the survey than principals in low crime neighborhoods.

Answer to Question 2

Amount of other assets and income level are both potential confounding variables.




craiczarry

  • Member
  • Posts: 527
Reply 2 on: Jul 24, 2018
Thanks for the timely response, appreciate it


nguyenhoanhat

  • Member
  • Posts: 332
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

For a complete list of videos, visit our video library