4 questions regarding hypothesis testing, survey package, ts on samples, plotting

Ben Bolker wrote:

Khawaja, Aman wrote:

I need to answer one of the question in my open source test is: What are
the four questions asked about the parameters in hypothesis testing?

Please check the posting guide.
* We don't answer homework questions ("open source" doesn't mean
that other people answer the questions for you, it means you can find
the answers outside your own head -- and in any case, we don't have
any of way of knowing that the test is really open).
* this is not an R question but a statistics question
* please don't post the same question multiple times

Besides, this is really unanswerable without access to your teaching material, 
which probably has a list of four questions somewhere...

Starting with 'Why is this parameter different from all other parameters?', perhaps.

It is a bit like the History question: "Who was what in what of whom?"

A traditional British equivalent is "Who dragged whom how many times around the walls of where?", which does have just about enough context.

The R answer to the original post would probably be

1. Why aren't there any p-values in lmer()?
2. How do I extract p-values from lm()?
3. Can R do post-hoc tests?
4. Can R do tests of normality?

and in statistical consulting the questions might be

1. Doesn't that assume a Normal distribution?
2. Do you have a reference for that?
3. What was the power for that test?
4. Can you redo the test just in the left-handed avocado farmers[*]


         -thomas



[*] this particular subset (c) joel on software.

Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle