Recent content by number0

You can try to use the Poisson distribution find the solution from there. In other words, multiply your summation with the e^(-x)/(e^(-x)). Move the denominator out. We know that the summation(e^(-x) * x^n/ n!) must be 1 since it is a distribution (Poisson). So the answer is 1/(e^-x).

Sorry, but I already got your answer (see imagery)... it's just that I do not know what distribution the conditional distribution follows...

Homework Statement See uploaded imagery. Homework Equations The Attempt at a Solution See uploaded imagery. I know that the distribution has something to do with the 1-dimensional Ising model being sampled via Gibbs sampler method, but that is all I know. Anyone have a...

Thanks for your time lanedance, but I am still stuck!

Homework Statement I do not know if this is the right forum or subforum for this kind of topic. So if it is not, I apologize in advance.Symbolize the following sentence: Given that some mean elf will bite and some friendly one will too, the mean ones will bite whether or not provoked but the...

The book specifically defined X as bounded as the following: |X| < M < ∞ . Here is the whole question, word for word: Show that if a random variable is bounded—that is, |X| < M < ∞—then E(X) exists.I do not know about the range though.

Homework Statement Show that if X is a bounded random variable, then E(X) exists.Homework Equations The Attempt at a Solution I am having trouble of finding out where to begin this proof.This is what I got so far: Suppose X is bounded. Then there exists two numbers a and b such that P(X > b)...

Thank you so much :)

I do not know if I did it correctly, but in my solution, I got the boundaries to be 0 < X <= 1. Is this correct?

Homework Statement If U is uniform on [−1, 1], find the density function of U^2. Homework Equations f(u) = 1/(b-a) The Attempt at a Solution I actually solved the problem already, but I am having trouble defining what the boundaries are for U^2. My work is uploaded in paint...

You could use the binomial. I should've done this a second time just to make sure; but I just used both the binomial and negative binomial distribution, and I reached the same answer. The first time I did it both the probabilities were way off of each other. Nevertheless, what do you mean by...

Homework Statement Two teams, A and B, play a series of games. If team A has probability .4 of winning each game, is it to its advantage to play the best three out of five games or the best four out of seven? Assume the outcomes of successive games are independent.Homework Equations...

Hmmm... I never thought to break up the problem into two. It should be much easier now. Thanks.

Homework Statement A coin with probability p of heads is tossed until the first head occurs. It is then tossed again until the first tail occurs. Let X be the total number of tosses required. (a) Find the PMF of X. (b) Find the mean and variance of X.Homework Equations PMF is basically a...

Hey, Is there any Two Sample Median Tests (for differences) in R. I tried searching for hours, and I got not luck. The closest ones I can think of is: mood.test wilcox.test but they are not really testing for median differences. The sign test, on the other hand, does tests for median...