Question

a researcher wants to know whether people are more likely to contact their local government officials depending on whether they are democrats or republicans. what test do you use

Answer 1

We can randomly sample n democrats and n repiblicians (for some large n. Say n>=50)

For each such units, we can ask, how many times they contacted their local government officials in the last year. We can assume that, the democrats' data satisfy:

And the republicians' data satisfy:

Now we can test,

depending on what we want to validate.

We can use a 2-independent sample t-test for the above test