Author Question: If you have at least ________ participants per group in a multiple-group experiment, random ... (Read 94 times)

bclement10

  • Hero Member
  • *****
  • Posts: 560
If you have at least ________ participants per group in a multiple-group experiment, random
  assignment should create equal groups.
 
  A) 5 B) 20 C) 10 D) 30

Question 2

Which of the following is not a threat to internal validity?
 
  A) maturation
  B) selection
  C) mortality
  D) history
  E) random selection



canderson530

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

B

Answer to Question 2

E



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

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?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

For a complete list of videos, visit our video library