Author Question: How many different conditions are there? a) none b) one c) two d) ... (Read 59 times)

Lobcity

  • Hero Member
  • *****
  • Posts: 524
How many different conditions are there?
 
  a) none
  b) one
  c) two
   d) three

Question 2

Selection is a threat to the internal validity of which of the following designs?
 
  a. Nonequivalent comparison group design
  b. Interrupted time-series design
  c. Regression-discontinuity design
  d. All of the above



fauacakatahaias

  • Sr. Member
  • ****
  • Posts: 353
Answer to Question 1

D

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

For a complete list of videos, visit our video library