Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:25 AM
micromass

1 
27,591 
Hello.
I came up with this problem while I was waking up this morning, and some of the finer aspects have me pretty...

Aug1313 12:13 PM
Mator

0 
402 
Lemma: If A is an at most countable alphabet, then the set A^* of strings over A is countable.
Proof begin:
Let...

Feb1114 02:45 PM
Hornbein

4 
254 
I was just wondering, this is a simple question, but i have started intro to stats, lol, but anyways i was wondering...

Jan1605 03:47 PM
jamesrc

1 
1,209 
I had a homework problem which I'm having trouble with. Unfortunately I missed my class when the teacher was giving...

Sep2306 10:07 PM
matrix_204

0 
4,184 
Hey guys, I've got this question from my Statistics Homework and wondered if someone could point me to a web site or...

Jan1605 03:35 PM
mathman

1 
1,560 
what explanation stands behind "let's make a deal"'s evenement? As i remember there are 3 doors : one with a car...

Jun1610 12:05 AM
The Chaz

8 
2,156 
Hi everybody!
I have a random iid sample Xi, i=1, ..., n
The empirical cdf of the sample at poin s is
...

Oct1809 10:07 AM
EnumaElish

1 
3,043 
Can somebody plz tell me what is the definition of an atomic sentence and the definition of a molecular sentence?...

Jul1505 01:36 AM
Matthias765

2 
974 
Hello People,
I'm and just somewhat confused about this topic.
Lets say I have a sample set A with sample size= 101...

Jul2312 06:17 PM
mattkunq

3 
2,675 
Can someone please help me with this. I read on wikipedia that the coefficient of Variance can be used when the...

Aug2212 07:23 PM
mattkunq

10 
1,661 
Hi, what are some of the classic undergrad/grad books on probability?
I am currently taking a 2nd/3rd year...

Nov306 06:19 PM
quasar987

2 
1,612 
Hi. I have a question on the correctness of the antecedent rule in sequent calculus when I read the book "mathematical...

Oct2412 08:22 PM
matts0

2 
2,151 
Hi
I have a question regarding i.i.d. random variables. Suppose X_1,X_2,\ldots is sequence of independent and...

Mar508 09:49 AM
maverick280857

3 
3,927 
Hi
I was studying the WLLN and the CLT. A form of WLLN states that if X_{n} is a sequence of random variables, it...

Mar1908 02:55 AM
maverick280857

12 
4,884 
Hi
Suppose X_{1}, \ldots, X_{n} is a sequence of i.i.d. random variables. We define
X_{(n)} = max(X_{1}, \ldots,...

Jul2508 07:19 PM
statdad

6 
4,086 
Hi,
How can I rigorously prove that the quantity
S = \sum_{i=1}^{n}X_{i}  a
(where X_{1},\ldots,X_{n} is a...

Apr1108 03:35 PM
quadraphonics

2 
3,553 
Hello,
In simple linear regression (or even in multiple linear regression) how does one prove that the coefficient...

Feb510 10:03 AM
EnumaElish

3 
1,414 
Hi,
I was wondering if someone could tell me what an overlay plot exactly is, in the context of linear regression....

Feb2310 08:15 PM
maverick280857

2 
5,581 
Hi
Is it possible to use both dummy variable regressors as well as categorical response variables in the same...

Apr1910 10:00 PM
maverick280857

0 
3,270 
This looks like an easy one, but I haven't found anyone yet who has answered it correctly, including me...
So, the...

Apr2710 03:09 PM
TacTics

4 
1,621 
Hi;
I'll start from an example.
There's a given set of positive integers: {2, 4, 6, 8, 10}. The problem is to...

Aug2408 06:30 AM
rash

3 
1,513 
hi guys, today i was confonted with this problem in grade 11 high school math.
consider the matrix M=(2 0)
...

Mar1708 01:45 PM
masterprimus

12 
15,479 
If all the exams have normal distribution will the average grades to student also be normal distributed?
I have...

Jul1111 08:45 AM
MaxManus

4 
1,380 
Hey guys, I'm taking a probability course and I'm having some trouble with 2 questions:
1) Suppose 10% of a...

Jul2806 07:22 AM
Maxwell

2 
5,097 
Hi!
I'm sorry if my question is a bit stupid. How many numbers between 100 and 10000 have exactly 3 same figures? I...

Feb410 03:05 AM
Mandark

5 
1,346 
So suppose we have 3 boxes, A,B,C. Black and Red balls in each.
In A, 3R and 7B.
B, 6R and 4B
C, 8R and 2B
First...

May1211 11:34 AM
monomath

1 
1,020 
I'm a bit lost on use of mutually exclusive and independent rule on this. I know probability of winning a game is a...

Jul610 10:05 PM
DyslexicHobo

5 
2,435 
Nevermind I found it.
Please remove

Oct406 12:47 PM
mazinse

0 
5,556 
40 teams are taking place in a knockout competition in which there is no seeding. They all have rankings determined...

Oct1112 12:41 PM
mazza47

6 
653 
My first post on these forums, was referred here by a friend of mine. Thanks in advance!
Mind that this question is...

Jan2712 11:06 AM
mbahnshee

11 
1,575 
I need help on how to get started with this question:
Im stocked and i just dont have a clue on how to figure this...

Dec108 04:10 PM
mathman

5 
5,884 
Prove or find counterexamples:
If A x B = empty set then A = empty set or B = empty set.

Dec208 10:49 AM
HallsofIvy

1 
2,643 
..using only the definition of the binary product:
for any sets A, B, C in a universe U:
(A x B) x C = A x (B x...

Dec208 10:55 AM
HallsofIvy

4 
1,965 
prove or disprove
n
sigma notation 2i1 = 2n, for all n is an element of N.
i=1
N = natural numbers

Dec808 06:01 PM
HallsofIvy

4 
1,519 
Hi,
I'm really struggling with a statistical problem:
5 people had a medical treatment, they were tested before...

Apr2212 05:22 PM
SW VandeCarr

1 
1,064 
I've done 3 wilcoxon matched pair tests and was wondering if someone could give me some advise on the most logical /...

Apr2412 06:23 PM
MBCT

0 
1,251 
Hello
I'm not too sure if this is the correct location for my post, but it's the best fit I can see!
The cdf of...

Aug2209 10:09 PM
mcfc

2 
697 
If I have a subset, how do I define an equivalence relation.
I understand it has to satisfy three...

Nov909 09:05 AM
CharmedQuark

5 
1,438 
Hello,
I am currently generating a campaign of experiments in where I have four factors (conditions like temp,...

Jul2110 12:02 PM
mcfeebo

0 
839 
Greetings,
I have a work requirement to calculate building chilled water use based on known supply temp (deg F),...

Nov2111 12:27 PM
I like Serena

3 
1,726 