Author Question: A confound is something that a) decreases sample size. b) increases internal validity. c) makes ... (Read 63 times)

vicky

  • Hero Member
  • *****
  • Posts: 586
A confound is something that
 
  a) decreases sample size.
  b) increases internal validity.
  c) makes results clearer and easier to understand.
  d) obscures the relationship between two variables.

Question 2

What has been shown to be related to the changes in marijuana consumption among high school students?
 
  a) Social factors that foster marijuana use, such as joblessness or economic factors.
  b) Media images supporting cigarette smoking.
  c) Lowered purity of marijuana available in the market.
  d) Beliefs about the risks associated with marijuana smoking.



dlook33

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

d

Answer to Question 2

d



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

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.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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.

For a complete list of videos, visit our video library