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

Author Question: It is the purpose of what type of study to find out whether one or more explanatory variables are ... (Read 86 times)

mrsjacobs44

  • Hero Member
  • *****
  • Posts: 500
on: Jul 24, 2018
It is the purpose of what type of study to find out whether one or more explanatory variables are related to a certain disease (for example whether smoking causes lung cancer)?
 a. Case-control study
  b. Matched-pairs experiment
  c. Block design
  d. None of the above

Question 2

Which of the following is not a type of observational study?
 a. Case-control study
  b. Retrospective study
  c. Prospective study
  d. Introspective study


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Amiracle

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

D


mrsjacobs44

  • Hero Member
  • *****
  • Posts: 500
Reply #2 on: Jul 24, 2018
TY


Amiracle

  • Sr. Member
  • ****
  • Posts: 334
Reply #3 on: Jul 24, 2018
You're welcome


« previous next »
 

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

This diagram shows a cross-section of a solar-type star. This diagram shows a cross-section of a solar-type star.
A roller cell-type electric fuel pump. A roller cell-type electric fuel pump.
The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ... The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ...
A severe case of delayed contact dermatitis (Type IV hypersensitivity) from wearing latex gloves. A severe case of delayed contact dermatitis (Type IV hypersensitivity) from wearing latex gloves.
How to find the antiderivative of double-angle trigonometric functions, sin(2x), cos(2x), etc. How to find the antiderivative of double-angle trigonometric functions, sin(2x), cos(2x), etc.
How to find the equation of a line that is perpendicular to a line passing through a point How to find the equation of a line that is perpendicular to a line passing through a point
Video: Atrophy

For a complete list of videos, visit our video library