Recent content by _joey

^ No disrespect, I don't think I need your help. :)

The example is from the textbook. I feel like explaining to the students what the problem asks about. Do you know much about probabilities?

^The lines are independent. The solution is given above for commenting.

People can enter as ABC, CBA, BAC. The assignment maybe determined by sex, age or martial status. It's equally likely. The number of lines are interesting as we searching for the probability that all lines will be balanced given the constraints.

Although, I identified the problem as simple probability problem, I don't think it fits 'pre-calculus level maths'.

There're 10 queue lines. Person entering each queue line is assigned a certain identifier. There are only 3 identifiers let say A, B, C. People entering 10 lines are divided in groups of 3 such that each group always have balanced number of people with different identifiers. For example, ABC...

Given 10 strata. 3 blocks in each strata and 3 treatments. Question: what is the probability that the trial will end exactly balanced for 2 of the 3 treatments and with the maximum excess for the other treatment? My solution about which I am unsure. The trial is exactly balanced fro 2...

Could some help with a question? Any hints or directions on how to approach would be greatly appreciate it. The question: http://s12.postimage.org/kvtyiacuj/question.png Thanks!

Here is the question http://imageshack.us/photo/my-images/824/questioni.png/ There are 3 ratings per paper in the dataset rated by different judges I am not sure about part(c) Thanks!

The question asks to assess the agreement between various pairs of raters rating subjects (let's say examination papers) and then it talks about 10 timeslots for this exam papers. No idea at all about the timeslot. There is probably some trick to it.

We have 18 subjects chosen at random, and they are rated by 6 randomly selected raters, and there is no requirement that the same rater rate all the subjects, we have a completely random one way design. Reliability is assessed with a ICC(1,1) or ICC(1) model depending on convention. The table...

I think I know what the problem is. I've been solving problems for many hours and I need a break. :)

Hi, I am trying to estimate variance for negative Binomial distribution using maximum likelihood estimation and Expected (Fisher's) information to determine its variance. I know what variance is for this distrubution but I cannot derive it. Here is my solution. Any comments and...

Thanks for your thoughts. Here is my solution. Correct me if it's wrong, please. http://img51.imageshack.us/img51/4955/exerc.jpg

Perhaps we could set up inequality for upper bound and show that the estimator could not be greater of the upper bound. What could the upper bound be? :)