# Messages List

1638

### Problem: Urgent Need you help.

Hi. This is Shoaib from Korea. I need your help in finding one solution. The problem explained as: Problem Statement I have to choose my best friend from the
Shoaib Mukhtar

Dec 12, 2006

#1638
1637

### Re: How to find the mean and variance of 1/X?

... new ... Hi If X >0, ie. X assumes only positive values and E(X) and E(1/X)exist then E(1/X)>= 1/E(X)because 1/X is a convex function.
mahe_iima

Nov 21, 2006

#1637
1636

### Re: How to find the mean and variance of 1/X?

THANK YOU VERY MUCH!
wilsonwxwu

Nov 21, 2006

#1636Fetching Sponsored Content...

1635

### Re: How to find the mean and variance of 1/X?

... I suggist to assume that y=1/x and make a transformation to this new r.v (y) and find f(y) then you can find the mean and variance. I will try to find it
zak_hi79

Nov 20, 2006

#1635
1634

### Re: a question about distribution convergence

1) function of a random variable is a random variable 2) Assuming normality, use central limit theorem. ... From: MOMEYA To: probability@yahoogroups.com Sent:
krieck

Nov 19, 2006

#1634
1633

### a question about distribution convergence

please, if we have two sequences of independent random variable named Xn and Yn who tends in distribution to X and Y respectively, how can i show that Xn+Yn
MOMEYA

Nov 15, 2006

#1633
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### Re: need help with a probability question....

Note: question is not solved by me. It's solved by my colleage Asif well I think probability will be = (arrangements in which 3 diseased plants are
sulli_melburn

Nov 9, 2006

#1632
1631

### Re: need help with a probability question....

In your approach, the first of three adjacent can be any one of 1-6, so there are 6 ways of having 3 adjacent plants with the disease. Similarly, the total
rraj@...

Nov 9, 2006

#1631
1630

### need help with a probability question....

here's the problem, In a small garden, there is a row of 8 pepper plants, 3 of which are diseased. Assuming that the disease occurs at random in the plants,
phigo67

Nov 7, 2006

#1630
1629

### Re: Probability with human factor (hm?..)

Let the player decide to stay with probability p(x), when x (in 1-6) is obtained on the dice. In case the person stays, the chances of winning are x/6. Hence
rraj@...

Oct 30, 2006

#1629
1628

### Probability with human factor (hm?..)

Hi all :-) i was programming an AI for a game and got stuck with one problem. I don't know if you will be willing to help me, but i'll give it a try :-) it
tjankus

Oct 30, 2006

#1628
1627

### need help in this

the screw produced by a certain machine were checked by examining the number of defectives in a sample of 12. the folowing table shows the distribution of 128.
sunitatrp

Oct 8, 2006

#1627
1626

### How to find the mean and variance of 1/X?

Excuse me. I have worked this question several days. Assume X follow a NORMAL distribution with mean A and variance B, how to find the the mean and variance of
wilson wu

Oct 4, 2006

#1626
1625

### How to find the mean and variance of 1/X?

Excuse me. I have worked this question several days. Assume X follow a NORMAL distribution with mean A and variance B, how to find the the mean and variance of
wilsonwxwu

Oct 4, 2006

#1625
1624

### Field f(A) defined as the intersection of all fields in Omega conta

The field f(A) generated by a class A in Omega is defined as the intersection of all fields in Omega containing A. (a)Show that f(A) is indeed a field, that A
gerard_faurejr

Sep 25, 2006

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