Question

How does one prove the formula $E[X\mid A] = \frac{E[I_A X]}{P(A)}$

score 58 · Answer 1 · 2026-04-17 12:51:29

58

Views

How does one prove the formula $E[X\mid A] = \frac{E[I_A X]}{P(A)}$

Published on 17 Apr 2026 - 12:51

score 530 · Answer 2 · 2026-04-14 16:32:38

530

Views

Dice game - deciding whether to re-roll or not

Published on 14 Apr 2026 - 16:32

score 67 · Answer 3 · 2026-04-10 16:16:52

67

Views

Intuition behind the extected value formula, for continuous cases

Published on 10 Apr 2026 - 16:16

score 49 · Answer 4 · 2026-04-15 18:59:19

49

Views

Find the mean of $\text{max}_{t\in[0,1]}\{|At+B|\}$ with $A,B\sim N(0,\sigma^2)$

Published on 15 Apr 2026 - 18:59

score 45 · Answer 5 · 2026-04-16 02:40:13

45

Views

Find the mean of $Y=\frac{1}{A}(e^{A}-1)$ where $A\sim N(0,\sigma^2)$

Published on 16 Apr 2026 - 2:40

score 54 · Answer 6 · 2026-04-14 15:47:16

54

Views

Help with showing that $\lim_{n \to \infty} E(|\frac{\sum_i^{n-1} I_i}{n}-\frac{1}{3}|)$ = 0

Published on 14 Apr 2026 - 15:47

score 319 · Answer 7 · 2026-04-16 10:59:40

319

Views

Variance of sample mean of n rolls of fair 6-sided die

Published on 16 Apr 2026 - 10:59

score 37 · Answer 8 · 2026-04-11 01:19:39

37

Views

Expectation of a transformation of normal random variable X does not depend on the mean of X

Published on 11 Apr 2026 - 1:19

score 37 · Answer 9 · 2026-04-12 07:59:24

37

Views

'Expected value' in normal distribution under certain conditions.

Published on 12 Apr 2026 - 7:59

score 71 · Answer 10 · 2026-04-14 09:55:37

71

Views

show that the fish number expected value is e, if you stop fishing only if the last fish caught is lighter than the one before

Published on 14 Apr 2026 - 9:55

score 60 · Answer 11 · 2026-04-15 11:44:56

60

Views

Derivation of expression for mean number of toss to get r heads

Published on 15 Apr 2026 - 11:44

score 81 · Answer 12 · 2026-04-15 06:00:02

81

Views

Expected remaining lifetime of exponentially distributed variable

Published on 15 Apr 2026 - 6:00

score 118 · Answer 13 · 2026-04-17 10:56:36

118

Views

Given two i.i.d RVs with exponential distribution $X,Y$, compute $E[X^2\mid X+Y]$

Published on 17 Apr 2026 - 10:56

score 571 · Answer 14 · 2026-04-16 09:46:58

571

Views

Expected value of drawing cards labeled $n, n+1, n+2$

Published on 16 Apr 2026 - 9:46

score 51 · Answer 15 · 2026-04-13 13:53:19

51

Views

How many flips in order to make a statistically significant estimate?

Published on 13 Apr 2026 - 13:53

List Question

How does one prove the formula $E[X\mid A] = \frac{E[I_A X]}{P(A)}$

Dice game - deciding whether to re-roll or not

Intuition behind the extected value formula, for continuous cases

Find the mean of $\text{max}_{t\in[0,1]}\{|At+B|\}$ with $A,B\sim N(0,\sigma^2)$

Find the mean of $Y=\frac{1}{A}(e^{A}-1)$ where $A\sim N(0,\sigma^2)$

Help with showing that $\lim_{n \to \infty} E(|\frac{\sum_i^{n-1} I_i}{n}-\frac{1}{3}|)$ = 0

Variance of sample mean of n rolls of fair 6-sided die

Expectation of a transformation of normal random variable X does not depend on the mean of X

'Expected value' in normal distribution under certain conditions.

show that the fish number expected value is e, if you stop fishing only if the last fish caught is lighter than the one before

Derivation of expression for mean number of toss to get r heads

Expected remaining lifetime of exponentially distributed variable

Given two i.i.d RVs with exponential distribution $X,Y$, compute $E[X^2\mid X+Y]$

Expected value of drawing cards labeled $n, n+1, n+2$

How many flips in order to make a statistically significant estimate?

Trending Questions

Popular # Hahtags

Popular Questions