This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The variance of the scores: 0, 1, 1, and 2 is A) .25 B) .5 C) .5 D) ... (Read 55 times)

piesebel

  • Hero Member
  • *****
  • Posts: 565
on: Jun 20, 2018
The variance of the scores: 0, 1, 1, and 2 is
 
  A) .25
  B) .5
  C) .5
  D) 1

Question 2

The comparison distribution for a t test for independent means is a t distribution instead of a normal curve because
 
  A) tables are not available for the normal curve.
  B) the population variance is estimated.
  C) Z distributions were not used at the time the t test for independent means was invented.
  D) there are more degrees of freedom for two samples than for one.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

manuelcastillo

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jun 20, 2018
Answer to Question 1

B

Answer to Question 2

B


piesebel

  • Hero Member
  • *****
  • Posts: 565
Reply #2 on: Jun 20, 2018
Thank you!


manuelcastillo

  • Sr. Member
  • ****
  • Posts: 304
Reply #3 on: Jun 20, 2018
Happy to help


« previous next »
 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Results from sequential study of two cohorts tested at three ages and at three different points in t Results from sequential study of two cohorts tested at three ages and at three different points in t
Iowa Gambling Task Scores Across Age Iowa Gambling Task Scores Across Age
Mean scores for Erikson’s stage V (Identity) for two cohorts. Scores for both cohorts increase ... Mean scores for Erikson’s stage V (Identity) for two cohorts. Scores for both cohorts increase ...
Mean scores for Erikson’s stage VI (Intimacy) for two cohorts. Scores for both cohorts increase ... Mean scores for Erikson’s stage VI (Intimacy) for two cohorts. Scores for both cohorts increase ...
Correlations between scores on a psychology test and number of boiled kumquats eaten per month Correlations between scores on a psychology test and number of boiled kumquats eaten per month
IQ scores form what mathematicians call a normal distribution "bell curve" IQ scores form what mathematicians call a normal distribution "bell curve"
Video: Condensation and Hydrolysis Animation

For a complete list of videos, visit our video library