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Author Question: Distinguish between probability and nonprobability sampling. ... (Read 104 times)

WWatsford

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on: Aug 1, 2018
Distinguish between probability and nonprobability sampling.

Question 2

You are interested in determining the average cost of a 3-minute telephone call to locations within the continental U.S. What sample size must you take to be 96 confident that the results will be within .75 of the true mean cost per call? From the phone company, you have gotten an estimate of = 7.71.
 a. 185
  b. 445
  c. 406
  d. 574
  e. 22


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courtney_bruh

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Reply #1 on: Aug 1, 2018
Answer to Question 1

With probability sampling, each person or element in the population has a known (or calculable) chance of being included in the sample.

Answer to Question 2

B


WWatsford

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Reply 2 on: Aug 1, 2018
Gracias!

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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