Question

What does robustness mean in hypothesis​ testing? And I think this is independent because the salaries...

What does robustness mean in hypothesis​ testing?

And

I think this is independent because the salaries of wives of doctors does not effect the salaries of other wives. Am i right?

The difference between annual salaries is tested by measuring the annual salary of wives of doctors and other wives.

A) The sampling consists of matched pairs because the individuals selected to beThe sampling consists of matched pairs because the individuals selected to be

in one sample are used to determine the individuals to be in the second sample.in one sample are used to determine the individuals to be in the second sample.

B) The sampling is independent because the individuals selected to be in one sample are used to determine the individuals to be in the second sample.

C) The sampling is independent because the individuals selected for one sample doThe sampling is independent because the individuals selected for one sample do

not dictate which individuals are to be in a second sample.not dictate which individuals are to be in a second sample.

D) The sampling consists of matched pairs because the individuals selected for one sample are not related to determining which individuals are in the other sample.

I picked C but it says I am wrong.

Math   Statistics-And-Probability   
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Answer #1

Robustness is the strength of a statistical model, tests, and procedures according to the specific conditions of the statistical analysis a study hopes to achieve. For the good performance of statistics, either the population from which the sample is drawn should be normal or the sample size should be large( usually greater than 30). However if the data which includes outliers or small departures does not affect the results

For the second question, Option C is correct. If it is incorrect, then go with Option D

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