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Author Question: The variance of the scores: 0, 1, 1, and 2 is A) .25 B) .5 C) .5 D) ... (Read 45 times)

piesebel

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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.


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manuelcastillo

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Reply #1 on: Jun 20, 2018
Answer to Question 1

B

Answer to Question 2

B


piesebel

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Reply #2 on: Jun 20, 2018
Thank you!


manuelcastillo

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Reply #3 on: Jun 20, 2018
Happy to help


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