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

Author Question: In a study of the effects of a reduced speed limit on arrests for speeding, it was discovered that ... (Read 13 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
on: Aug 4, 2018
In a study of the effects of a reduced speed limit on arrests for speeding, it was discovered that the police had switched from radar to Vascar (a new way of measuring the speed of an oncoming car).
 
  What possible confounding factor did this switch introduce?
 
  A) instrumentation
  B) history
  C) maturation
  D) regression to the mean

Question 2

If researchers were interested in studying the effects of New York State's raising of the drinking age to 21 on traumatic brain injury, what type of research design would be ideal?
 
  A) a standard 2 X 2 factorial
  B) an equivalent control-group design
  C) a between-subjects design
  D) an interrupted time-series design


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bassamabas

  • Sr. Member
  • ****
  • Posts: 294
Reply #1 on: Aug 4, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: D


dakota nelson

  • Member
  • Posts: 604
Reply 2 on: Aug 4, 2018
Gracias!

blakcmamba

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Model organisms used to study the genetics of development Model organisms used to study the genetics of development
Prolonged abuse leads to production of stress hormones that can lead to a cascade of effects ... Prolonged abuse leads to production of stress hormones that can lead to a cascade of effects ...
Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ... Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ...
Effects of the Autonomic Nervous System Effects of the Autonomic Nervous System
The inverse-square law and its effects. Doubling your distance away from a radioactive material ... The inverse-square law and its effects. Doubling your distance away from a radioactive material ...
Recently discovered members of the deep pelagic community Recently discovered members of the deep pelagic community
Video: Female Reproductive System - Hormonal regulation (GnRH) الجهاز التناسلي للأنثى - التنظيم الهرموني

For a complete list of videos, visit our video library