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Author Question: What is a t test, when is it used, and what does it tell us? What will be an ideal ... (Read 21 times)

CORALGRILL2014

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on: Jun 19, 2018
What is a t test, when is it used, and what does it tell us?
 
  What will be an ideal response?

Question 2

If each person in a large group has an equal chance of being included in an experiment, then the researcher is using ____ sampling.
 
  a. systematic
 b. random
 c. convenience
  d. cluster


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tuwy

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

A t test is a parametric inferential statistical test of the null hypothesis for a single sample where the population variance is not known. It is used for samples of 30 or less, when the distribution is bell-shaped but not normal, and the data are interval or ratio. It tells us whether a sample mean differs significantly from a population mean.

Answer to Question 2

b


CORALGRILL2014

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Reply 2 on: Jun 19, 2018
Thanks for the timely response, appreciate it

Joy Chen

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Reply 3 on: Yesterday
Gracias!

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