« previous next »

Author Question: Which of the following is not a characteristic of Students' t-distribution? A) depends on degrees ... (Read 58 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
on: Jul 25, 2018
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
Reply #1 on: Jul 25, 2018
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
« previous next »
 

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

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
Work Settings for People Earning Master’s and Bachelor’s Degrees in Psychology Work Settings for People Earning Master’s and Bachelor’s Degrees in Psychology
Blood typing and cross-reactions. The blood type depends on the presence of surface antigens ... Blood typing and cross-reactions. The blood type depends on the presence of surface antigens ...
Distribution and Forms of Precipitation: Rain Distribution and Forms of Precipitation: Rain
The distribution of high-energy, nutritious biscuits was a lifeline in the first days after the 2010 The distribution of high-energy, nutritious biscuits was a lifeline in the first days after the 2010
IQ scores form what mathematicians call a normal distribution "bell curve" IQ scores form what mathematicians call a normal distribution "bell curve"
Video: Transmission Across a Synapse

For a complete list of videos, visit our video library