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Author Question: What is a z test, when is it used, and what does it tell us? What will be an ideal ... (Read 28 times)

gonzo233

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

Question 2

To select a sample of five children from a class of 30, a researcher puts each child's name on a slip of paper, then shuffles the papers in a hat and randomly picks five names. What kind of sampling is being used?
 
  a. quota
 b. non-quota
 c. probability
 d. nonprobability


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onowka

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

A z test is a parametric inferential statistical test of the null hypothesis for a single sample where the population variance is known. It tells us whether the sample differs significantly from the population.

Answer to Question 2

c


gonzo233

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Reply 2 on: Jun 19, 2018
Excellent

bbburns21

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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