I had a homework problem which I'm having trouble with. Unfortunately I missed my class when the teacher was giving examples of t-distribution problems. If someone could help me about the steps involving to solve this problem, I would really appreciate it.
Let T=K(X+Y)/(Z^2 + W^2)^1/2 where...
I had a homework problem which I'm having trouble with. Unfortunately I missed my class when the teacher was giving examples of t-distribution problems. If someone could help me about the steps involving to solve this problem, I would really appreciate it.
Let T=K(X+Y)/(Z^2 + W^2)^1/2 where...
This is the problem that I'm doing:
Suppose that Z is a standard normal random variable: i.e. Z~N(0,1).
a) Find the distribution of X=|Z| .
b) What is the density of X?
c) Find the distribution of Y=X^2
d) What is the joint distribution of X and Y...
Well when I draw the graph for |x| i get like a graph like this starting at the origin \|/ , and I'm not sure how to find the inverse or by using the horizontal line test? is that like one-to-one function type?
I'm preparing for my Statistics and Probability exam tomorrow, and I have a quick question:
What is the inverse of h(y) where y=|x|. (just to make sure, h'(x)=1, right?)
So for example, all x such that x is not in (A Δ B)= (A-B) U (B-A)!
What I was asking is what's (A Δ B)^c= ??
Because in the textbook it's not given and I got stuck for one of the problems before I could proceed.
Yes that is also given in the question but I can't make them equal. Like using your example, it doesn't equal. So does that mean it doesn't equal?
I'm stuck at the same place as I posted in my first post.
Hi, I have a quick question. What does the triangle (Δ) mean? I was asked to prove this, but since it's not told in the book and I just wana get an idea of what the Δ means.
Show that A Δ B^c = A^c Δ B
Also after trying to prove the two sides, I got stuck here...
For A Δ B^c...
Speaking about the Fundamental thm of calculus, i was wondering why is it that for F(x)= int from 0 to x for f(t)dt, the function F is the constant function 0?
How do u find an explicit formula when given an integral of a function.
For example, the integral from 0 to x of tg(t)dt=x+x^2, how do u find the forumla for g(t)?
Convergence tests?
I was having some trouble deciding which convergence tests to use for some of the following problems, as i have about a day or less to work on them. So please just tell me which convergence tests are easiest in doing these problems and some tips as sum of them require more...
could someone check this proof for me and tell me what is missing as i m not sure if i know anymore:(problem stated above)
Proof:
If a_n ->L and b_n ->L for some L, then for any eps>0 there is a K such that for all n, if n>K, then |a_n - L|<eps/2 and |L - b_n|<eps/2.
Since n>K, |a_n - b_n|</=...