« previous next »

Author Question: William has 20 students take a test on two different occasions. What would be the df if he wanted to ... (Read 30 times)

penza

  • Hero Member
  • *****
  • Posts: 1,022
on: Jun 20, 2018
William has 20 students take a test on two different occasions. What would be the df if he wanted to compare the mean scores from both occasions?
 
  a. 39
  b. 38
  c. 19
  d. 18

Question 2

Significance tests have two components. They are:
 
  a. size of effect; independence
  b. independence; dependence
  c. size of effect; size of study
  d. p value; test statistic


morganmarie791

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jun 20, 2018
Answer to Question 1

c

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

William Beebe William Beebe
Urease Test Urease Test
Model of a longitudinal study in which 983 students were surveyed in 1984 and then again in 1985, 19 Model of a longitudinal study in which 983 students were surveyed in 1984 and then again in 1985, 19
Common Blood Test Groups Common Blood Test Groups
Test Paper Test Paper
Photo of a sign taken at an emissions test facility. Photo of a sign taken at an emissions test facility.
Video: What are Strong & Weak Acids and How they're different?

For a complete list of videos, visit our video library