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 93 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?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Find the speed after 40.0 min if the initial speed is 3250 rev/min Find the speed after 40.0 min if the initial speed is 3250 rev/min
How to find the distance of any line segment How to find the distance of any line segment
Determine if each function is continuous, If the function is not continuous, find the x-axis Determine if each function is continuous, If the function is not continuous, find the x-axis
Find derivative using chain rule Find derivative using chain rule
Differentiation-find the derivative by the delta method Differentiation-find the derivative by the delta method
Neither heat-killed S-type nor live R-type bacteria can kill mice, but simultaneous injection of bot Neither heat-killed S-type nor live R-type bacteria can kill mice, but simultaneous injection of bot
Video: Bacteriophage (Virus) - Mice Experiment

For a complete list of videos, visit our video library