Mohamed I. Riffi

12 Questions 41 Answers 0 Followers

Questions related from Mohamed I. Riffi

Where can I find the Mathematica code for the inverse Sumudu transform?

Dear Colleagues, I need the Mahtematica code of an inversion formula of the Sumudu transform. Thanks in advance.

03 May 2022 3,865 2 View

How is the reliability of a system of $n$ independent machines related to time between failures of the machines?

Consider $n$ identical and independent machines with $\alpha$ independent components each. Suppose that each machine fails if all of its components fail. Further, in each machine, one component...

22 March 2019 6,953 0 View

Where can I find information about the k-out-of-n systems and their reliability?

Dear Colleagues, I am trying to use some results on m-spacings of the gamma (and exponential) distributions on the reliability of the k-out-of-n systems. I found a way to describe the life time...

09 January 2019 6,793 3 View

How to look for suitable priors of the parameters of a distribution that has a complicated pdf?

Dear Colleagues, I an working now on the Bayesian estimation of the parameters of a distribution with somehow complicated pdf. It is very hard to imagine the shape of the prior of some of these...

02 November 2018 2,576 0 View

Do we really need to use the normal approximation to the binomial probabilities when testing statistical hypothesis?

Most of statistics textbooks approximate the binomial probabilities by the normal probabilities when testing binomial hypothesis especially when the sample size n is large enough. Now, since we...

16 October 2017 5,899 4 View

How to simulate a Markov Chain?

This Fall, I am teaching my master students an introductory course on Markov chains. I am looking for an easy/clear method to explain the theoretical basis of simulating a Markov chain; i.e.;...

08 October 2017 8,722 9 View

I need a concise example of pairwise independent random variables that are not mutually independent.

I am looking for a concise example of three pairwise independent (non-degenerate) random variables that are not mutually independent.Thanks.

05 June 2017 4,214 12 View

What's wrong with the computation of the probability that the exponential spacing Dn becomes less than t>0 for the first time?

Let X1, X2, ..., Xn be a random sample of size n for the standard exponential distribution and X1:n, X2:n, ..., Xi:n be the corresponding order statistics, where X1:n

24 May 2017 8,899 10 View

I am seeking information about using spacings of gamma order statistics in applications. Could you please let me know any resorces regarding this?

Where can I find information about gamma spacings applications?Thanks so much.

18 April 2017 9,643 0 View

Where can I find applications on spacings of order statistics?

Suppose we already know the pdf of the spacings between gamma order statistics, where can we find applications that use this pdf?Thanks so much.

26 January 2017 7,645 4 View

How do I estimate the number of components of a Poisson mixture distribution?

When the number of components of a Poisson mixture distribution is unknown, one needs to make inference about it so that he might use the Gibbs sampling method to estimates the parameters of the...

24 November 2015 9,433 4 View

Distribution of gaps between prime numbers in a random sampe.

Dear Colleagues, Suppose that you have a random sample of size n from the set of positive integers. Some of the elements of this random sample will be prime numbers. Determine the positions of...

01 January 1970 397 7 View