User Ritz

6 votes

Proving $E[X^4]=3σ^4$

answered Sep 7, 2016 at 8:49

5 votes

Accepted

Can you simplify this expression?

answered Jul 1, 2015 at 9:05

4 votes

Differentiate the Function: $ f(x)= x\ln x\ - x $

answered Jul 1, 2015 at 13:06

4 votes

Why does $\sqrt{8^2+(8\sqrt 3)^2}=16$

answered Oct 20, 2015 at 8:15

4 votes

Accepted

Rouché theorem in queuing theory

answered May 9, 2014 at 8:15

4 votes

Finding moment generating functions for a dice roll

answered May 14, 2014 at 7:32

3 votes

Puzzle of gold coins in the bag

answered Nov 13, 2014 at 14:24

3 votes

Starting from state 0, the mean number of visits of state 2 before coming back to state 0 is?

answered Feb 17, 2016 at 11:00

3 votes

Accepted

Renewal process problem

answered Mar 9, 2016 at 14:09

3 votes

Given E(X) and Var(X) find the Expectation of $E[x-2(X-1)^2]$

answered Jun 30, 2015 at 14:26

3 votes

Queues with general arrival time and service time distributions

answered Mar 31, 2016 at 13:59

3 votes

Accepted

Theory of Queueing

answered Mar 31, 2016 at 13:42

2 votes

Accepted

Find $E[S]$ in an interrupted $M/G/1$ queue

answered Apr 5, 2016 at 12:22

2 votes

Accepted

Clarification on variance and expected value problem

answered Mar 9, 2016 at 16:02

2 votes

Accepted

Markov Chains: Finding the Embedded DTMC $P(t)$ from generator matrix $Q$

answered Mar 9, 2016 at 14:52

2 votes

Evaluating the ratio $ {{a_{n+1}}\over{a_n}}$ in calculating the radius of convergence for a power series

answered Aug 25, 2015 at 7:12

2 votes

Question about $M/GI/ \infty $ queue

answered May 27, 2015 at 7:36

2 votes

Accepted

A tough rearranging

answered Jan 16, 2015 at 9:42

2 votes

Poisson Modeling/ Queue Theory - Reference Material

answered Sep 10, 2014 at 7:23

2 votes

Arrange the following growth rates in increasing order: $O (n (\log n)^2), O (35^n), O(35n^2 + 11), O(1), O(n \log n)$

answered Oct 2, 2014 at 8:33

1 vote

What would the next step be in this integral problem?

answered Oct 3, 2014 at 13:23

1 vote

Accepted

How to compute this arithmatic series?

answered Oct 8, 2014 at 8:10

1 vote

Continuous Markov chains, arriving pairs

answered May 22, 2014 at 15:12

1 vote

When is a Markov chain null recurrent?

answered May 23, 2014 at 7:44

1 vote

For a M/M/1/K System, why is utilization = $\rho=\lambda T_s$

answered Jan 20, 2016 at 8:29

1 vote

L'Hospital's Rule to find limit

answered Oct 22, 2014 at 13:32

1 vote

Probability of winning more than half of the games with stronger opponent

answered Nov 14, 2014 at 8:55

1 vote

Find the number of 17-digit binary sequences with more 0's than 1's.

answered Nov 28, 2014 at 14:59

1 vote

M/M/3 queue - reducing wait time by adding servers

answered Apr 17, 2014 at 13:05

1 vote

Accepted

How to find E(Y) given that the random variable X is exponentially distributed with lambda equal to 0.5?

answered Jun 29, 2015 at 11:35

Stack Exchange Network

58 Answers

Proving $E[X^4]=3σ^4$

Can you simplify this expression?

Differentiate the Function: $ f(x)= x\ln x\ - x $

Why does $\sqrt{8^2+(8\sqrt 3)^2}=16$

Rouché theorem in queuing theory

Finding moment generating functions for a dice roll

Puzzle of gold coins in the bag

Starting from state 0, the mean number of visits of state 2 before coming back to state 0 is?

Renewal process problem

Given E(X) and Var(X) find the Expectation of $E[x-2(X-1)^2]$

Queues with general arrival time and service time distributions

Theory of Queueing

Find $E[S]$ in an interrupted $M/G/1$ queue

Clarification on variance and expected value problem

Markov Chains: Finding the Embedded DTMC $P(t)$ from generator matrix $Q$

Evaluating the ratio $ {{a_{n+1}}\over{a_n}}$ in calculating the radius of convergence for a power series

Question about $M/GI/ \infty $ queue

A tough rearranging

Poisson Modeling/ Queue Theory - Reference Material

Arrange the following growth rates in increasing order: $O (n (\log n)^2), O (35^n), O(35n^2 + 11), O(1), O(n \log n)$

What would the next step be in this integral problem?

How to compute this arithmatic series?

Continuous Markov chains, arriving pairs

When is a Markov chain null recurrent?

For a M/M/1/K System, why is utilization = $\rho=\lambda T_s$

L'Hospital's Rule to find limit

Probability of winning more than half of the games with stronger opponent

Find the number of 17-digit binary sequences with more 0's than 1's.

M/M/3 queue - reducing wait time by adding servers

How to find E(Y) given that the random variable X is exponentially distributed with lambda equal to 0.5?