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Author Question: The z test for independent groups is seldom used because _________. a. it lacks sensitivity b. ... (Read 48 times)

Redwolflake15

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on: Jun 19, 2018
The z test for independent groups is seldom used because _________.
 
  a. it lacks sensitivity
  b. it is too complicated
  c. we seldom know the population variances
  d. the sampling distribution of z under H0 is unknown

Question 2

Having just made what you feel is to be a Type II error, using an independent groups design and a t test analysis, which of the following might you do in the next experiment to reduce the probability of a Type II error?
 
  a. increase N
  b. change to a correlated groups design
  c. try to reduce the variance by better experimental control
  d. all of these


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heinisk01

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Reply #1 on: Jun 19, 2018
Answer to Question 1

C

Answer to Question 2

D


Redwolflake15

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Reply 2 on: Jun 19, 2018
Great answer, keep it coming :)

kjohnson

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Reply 3 on: Yesterday
:D TYSM

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