Author Question: Which of the following is not a characteristic of Students' t-distribution? A) depends on degrees ... (Read 31 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
Which of the following is not a characteristic of Students' t-distribution?
 
  A) depends on degrees of freedom.
  B) symmetric distribution
  C) For large samples, the t and z distributions are nearly equivalent.
  D) mean of 1

Question 2

Video games A headline in a local newspaper announced Video game playing can lead to better spatial reasoning abilities.
 
  The article reported that a study found statistically significant differences between teens who play video games and teens who do not, with teens who play video games testing better in spatial reasoning. Do you think the headline was appropriate? Explain.



cici

  • Sr. Member
  • ****
  • Posts: 325
Answer to Question 1

D

Answer to Question 2

No, this was not a controlled experiment, so no determination of cause and effect can be made. Perhaps there is something about teens who play video games that make them good at video games and at spatial reasoning, or maybe teens with good spatial reasoning enjoy games more.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

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.

For a complete list of videos, visit our video library