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Adding a probability to a number (probability theory)

score 37 · Answer 1 · 2026-03-25 02:59:12

37

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Adding a probability to a number (probability theory)

Published on 25 Mar 2026 - 2:59

score 119 · Answer 2 · 2018-10-19 17:33:32

119

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When does $E[X] \leq E[Y]$ imply $E[X^2] \leq E[Y^2]$?

Published on 19 Oct 2018 - 17:33

score 95 · Answer 3 · 2018-10-20 01:31:47

95

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expected time for happening the first events of three independent Poisson random variables

Published on 20 Oct 2018 - 1:31

score 230 · Answer 4 · 2018-10-20 01:48:52

230

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Let $p>0$ be a constant. Prove that if $E{|X|}^p<\infty$, then $x^pP(|X| > x)\to 0(x\to \infty)$.

Published on 20 Oct 2018 - 1:48

score 502 · Answer 5 · 2018-10-20 19:50:55

502

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Is it true $E(E(X|Y)|Z)=E(E(X|Y,Z)|Z)$?

Published on 20 Oct 2018 - 19:50

score 2.3k · Answer 6 · 2018-10-21 14:51:06

2.3k

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A key part in the expectation of geometric distribution

Published on 21 Oct 2018 - 14:51

score 104 · Answer 7 · 2018-10-21 17:47:27

104

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Expected value of a random variable with non-negative values

Published on 21 Oct 2018 - 17:47

score 213 · Answer 8 · 2026-03-25 19:07:20

213

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(Random Walk) Compute average ratio for the number of right cookies to total cookies eaten in a single cycle

Published on 25 Mar 2026 - 19:07

score 2.8k · Answer 9 · 2018-10-22 06:01:55

2.8k

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Expected value of the random variable $Xe^X$ where $X\sim N(0,1)$

Published on 22 Oct 2018 - 6:01

score 33 · Answer 10 · 2018-10-22 12:40:28

33

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Does this probability converge to zero

Published on 22 Oct 2018 - 12:40

score 61 · Answer 11 · 2026-03-25 21:51:12

61

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On the random variable which denotes the number of flips, in a coin toss, it takes to get a run of $n$ successive heads

Published on 25 Mar 2026 - 21:51

score 3.1k · Answer 12 · 2018-10-23 02:43:28

3.1k

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Mean and Variance of a Logarithmic Distribution

Published on 23 Oct 2018 - 2:43

score 32 · Answer 13 · 2018-10-23 03:29:02

32

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If $A,B$ are random variables of different distributions, and $\mathbb{E}(A)=\mathbb{E}(B)$, is it necessary for $P(A>B)=P(A<B)$

Published on 23 Oct 2018 - 3:29

score 252 · Answer 14 · 2018-10-23 06:09:52

252

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How to calculate expected value of a game that doesn't need to be played to completion e.g. Blackjack and stopping when aces are gone.

Published on 23 Oct 2018 - 6:09

score 31 · Answer 15 · 2018-10-23 08:30:51

31

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The convergence of a r.v. moment of order r, about a and its central moments

Published on 23 Oct 2018 - 8:30

List Question

Adding a probability to a number (probability theory)

When does $E[X] \leq E[Y]$ imply $E[X^2] \leq E[Y^2]$?

expected time for happening the first events of three independent Poisson random variables

Let $p>0$ be a constant. Prove that if $E{|X|}^p<\infty$, then $x^pP(|X| > x)\to 0(x\to \infty)$.

Is it true $E(E(X|Y)|Z)=E(E(X|Y,Z)|Z)$?

A key part in the expectation of geometric distribution

Expected value of a random variable with non-negative values

(Random Walk) Compute average ratio for the number of right cookies to total cookies eaten in a single cycle

Expected value of the random variable $Xe^X$ where $X\sim N(0,1)$

Does this probability converge to zero

On the random variable which denotes the number of flips, in a coin toss, it takes to get a run of $n$ successive heads

Mean and Variance of a Logarithmic Distribution

If $A,B$ are random variables of different distributions, and $\mathbb{E}(A)=\mathbb{E}(B)$, is it necessary for $P(A>B)=P(A<B)$

How to calculate expected value of a game that doesn't need to be played to completion e.g. Blackjack and stopping when aces are gone.

The convergence of a r.v. moment of order r, about a and its central moments

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