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

Feb2313 09:25 AM
micromass

1 
32,734 
Hi
I am asking, if I am trying to make inference using Bayes rule based on a prior probability that is a random...

Sep1709 02:58 PM
winterfors

1 
1,318 
Let the p.m.f. of M be defined by f(x)=x/8,x=1,3,4. What is the mean of M?
Is this the same an E(M) of a binomial?

Aug2809 10:35 AM
g_edgar

1 
841 
Hello Forum,
usually the Pearson coefficient is meaninful to find the linear relationship between two variables....

Aug3009 10:24 PM
wofsy

1 
3,240 
Dear Reader,
I am writing for information, or a point towards any information about the calculation on the...

Sep209 04:32 PM
mathman

1 
921 
Show that (\neg B \wedge (A \Rightarrow B)) \Rightarrow \neg A is a tautology.
I tried a truth table and found this...

Sep1109 09:51 PM
dcramps

1 
975 
I am taking an "introduction to probability" class and there is a question (related to calculus) that the professor is...

Sep1109 11:07 PM
Roni1985

1 
693 
Hi there,
I have a question about an assignment I got from school.
They were initially 12 assignments, I've...

Sep1309 11:42 AM
Sander1337

1 
3,984 
Dear All,
Having trouble with a seemingly simple logic truth table. Are these answers correct?
...

Sep1409 12:45 AM
JCVD

1 
5,316 
Prove Fn ≤ (7/4)n for all n, 0≤n
Fn = Fn1 + Fn2
Let P(n) be true for some n = k, for 0≤k
Let n = k+1
...

Sep1509 08:27 PM
HallsofIvy

1 
4,335 
I'm trying to understand the difference between these two algebraic structures.
An algebra is a collection of...

Sep1709 11:43 AM
Preno

1 
5,647 
I have a Poissonbased question that I am not sure how to approach and solve. A processor receives groups of bits with...

Sep1909 04:39 PM
scg4d

1 
978 
Hi,
I have a situation where I want to define a function over all possible rings. For example, I would like to...

Sep1809 05:04 PM
Preno

1 
1,581 
Human body temperatures are normally distributed with a mean of 98.20 and a standard deviation of 0.62.
Find the...

Sep1809 06:58 PM
EnumaElish

1 
1,322 
Hello,
Suppose that we have two sets of random variables, which are arranged in an ascending order as:
...

Sep2509 08:50 AM
bpet

1 
739 
Human body temperatures are normally distributed with a mean of 98.20 and a standard deviation of 0.62.
Find the...

Sep1909 05:02 PM
HallsofIvy

1 
4,065 
How can I prove <by induction> the following De Morgan laws are valid for all n >= 2
 ( P(d1) ^ ... ^ P(dn) ) = (...

Sep2409 09:46 PM
Ben Niehoff

1 
1,679 
Hi everyone
I built a 4 bit asynchronous counter:...

Oct509 01:31 PM
Kenneth Mann

1 
4,097 
Show that these statement about real number x are equivalent
(i) x is rational
(ii) x/2 is rational
(iii)3x1is...

Sep2709 01:36 PM
Office_Shredder

1 
706 
A sample of 20 pages was taken without replacement from the 1,591page phone directory
Ameritech Pages Plus Yellow...

Sep2709 05:04 PM
statdad

1 
1,926 
Biting an unpopped kernel of popcorn hurts! As an experiment, a selfconfessed connoisseur of cheap popcorn carefully...

Sep2709 03:13 PM
EnumaElish

1 
2,195 
Does anyone know how to create a matrix of complex Gaussian noise (with unit power = 1 and mean of zero)? I need to...

Sep3009 02:52 PM
farful

1 
13,557 
I am having trouble with what seems to be a simple combinations or permutations problem as follows: Melodies for more...

Oct209 06:45 PM
mathman

1 
3,524 
how do i show that a markov chain is irreducible?

Oct709 02:55 PM
EnumaElish

1 
5,247 
I'm just curious as to how to prove that a Bernoulli distribution probability function is valid (ie. that it is indeed...

Oct809 11:03 AM
bpet

1 
1,276 
Let ∑ be the variancecovariance matrix of a random vector X. The first component of X is X1, and the second component...

Oct1009 07:34 PM
statdad

1 
7,754 
I have a scatterplot X is just 30 given values. Y is 2*X + eps, where eps is a random figure. The Plot is Y vs X
I...

Oct1309 06:46 PM
statdad

1 
768 
The problem statement, all variables and given/known data
There are w white balls and b black balls in a bowl....

Oct1509 06:42 AM
bpet

1 
1,420 
Could anyone help me evaluate the integral
...

Oct1709 05:02 PM
mathman

1 
849 
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 
3,307 
In the metatheory of Sentential Logic, what is the difference between saying
P is T on \alpha
vs.
\alpha(P)=T...

Oct1809 10:28 PM
honestrosewater

1 
1,084 
So I have a test tomorrow and this question is in a list of review questions and I'm having trouble remembering where...

Oct2009 01:02 AM
Office_Shredder

1 
6,425 
I have been trying to figure out the proof to this problem for the past couple of days and still don't have an answer....

Oct2109 10:11 AM
g_edgar

1 
845 
Hi,
I have a regular OLS regression that includes a variable both by itself and squared (i.e. y=b0+b1*x+b2*x^2). I...

Oct2209 02:19 PM
EnumaElish

1 
4,397 
From my extremely small and inadequate knowledge of stochastic processes (and Wikipedia):
A stochastic process is a...

Oct2509 03:36 AM
bpet

1 
1,649 
A calculator has an eight digit display and a decimal point that is located at the extreme right of the number...

Nov409 06:08 PM
tinytim

1 
2,595 
The basic idea is this. You get to roll 5 or 6 12sided dice (d12). For any 12's your roll, you every 12 you roll,...

Oct3009 11:03 AM
Pere Callahan

1 
2,093 
hello
i have given this problem to find pdf of function z.i have solved most of it and stuck at the end.
i have...

Nov309 09:59 PM
zli034

1 
949 
hi
i have an exam after 1 week and while i was studying i found this simple problem
but i couldnt answer it as the...

Nov509 04:21 AM
HallsofIvy

1 
757 
Hi,
I have a data set where temperature and precipitation were monitored for a series of days at 5 ephemeral...

Nov509 09:41 PM
bpet

1 
1,236 
Let X be a continuous random variable with
P(X>x)=e^ax, x less/equal 0
Where a is a positive constant. Find EX...

Nov509 04:13 AM
HallsofIvy

1 
2,214 