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

Author Question: It is the purpose of what type of study to find out whether one or more explanatory variables are ... (Read 94 times)

mrsjacobs44

  • Hero Member
  • *****
  • Posts: 500
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
Answer to Question 1

A

Answer to Question 2

D





 

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

For a complete list of videos, visit our video library