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Author Question: In the context of this problem, explain why a one-sided alternative hypothesis is more appropriate ... (Read 93 times)

shenderson6

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on: Jun 24, 2018
In the context of this problem, explain why a one-sided alternative hypothesis is more appropriate than a two-sided alternative.
 
  What will be an ideal response?

Question 2

Compare and contrast stratified sampling and cluster sampling. Under what circumstances would these techniques be chosen over a simple random sample?
 
  What will be an ideal response?


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poopface

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Reply #1 on: Jun 24, 2018
Answer to Question 1

A one-sided alternative is more appropriate since we are not interested in detecting possible low levels of impurity, only high levels of impurity.

Answer to Question 2

Stratified random sampling occurs when the population is divided into strata, and a random sample is drawn from each strata. Cluster sampling occurs when the population is divided geographically into clusters, and a census is performed on each chosen cluster. A researcher would typically choose one of these methods to ensure the representation of subsamples that may constitute small proportions of the sample.


shenderson6

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Reply 2 on: Jun 24, 2018
Thanks for the timely response, appreciate it

Viet Thy

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Reply 3 on: Yesterday
Gracias!

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