List questions from expectation

Published on 10 Apr 2026 - 3:20

288

Views

Finding $3rd$ Moment of an Indicator Function

Published on 13 Apr 2026 - 22:26

52

Views

Expectation of Ball in Box

Published on 14 Apr 2026 - 11:54

67

Views

Find $E(Y|X) $ for $f(x,y)=e^{-y}$, where $0 \leq x \leq y$

Published on 13 Apr 2026 - 19:10

983

Views

Find $Cov(X,Y) $ for $f(x,y)=e^{-y}$, where $0 \leq x \leq y$ and $E[Y|X]=x+1$:

Published on 16 Apr 2026 - 11:52

447

Views

$X$ and $Y$ are independent random variables, $E(X)=0$, $E(Y)$ is finite, how to prove $E(|X+Y|)\geq E(|Y|)$?

Published on 15 Apr 2026 - 4:03

230

Views

Expected number of tosses of a die

Published on 13 Apr 2026 - 23:09

64

Views

Expectation problem from a question paper.

Published on 13 Apr 2026 - 4:05

50

Views

Interpret discrete expected value problem?

Published on 10 Apr 2026 - 20:17

232

Views

Finding Expected Value and Variance from a Systematic Sample

Published on 11 Apr 2026 - 23:20

375

Views

Expectation of repeated number 3 times on dice

Published on 18 Apr 2026 - 11:58

136

Views

Calculating expectation of a truncated random variable.

Published on 12 Apr 2026 - 13:31

86

Views

Expected value: what is wrong with my reasoning?

Published on 11 Apr 2026 - 1:20

67

Views

Finding $E(\hat{p})$ and $V(\hat{p})$ of a sample proportion

Published on 14 Apr 2026 - 4:45

1.1k

Views

A fair die is rolled 14 times. Let X be the number of faces that appear exactly 2 times. Find Var(X).

Published on 15 Apr 2026 - 2:04

List Question

Expectation of Poisson Random Variables

Finding $3rd$ Moment of an Indicator Function

Expectation of Ball in Box

Find $E(Y|X) $ for $f(x,y)=e^{-y}$, where $0 \leq x \leq y$

Find $Cov(X,Y) $ for $f(x,y)=e^{-y}$, where $0 \leq x \leq y$ and $E[Y|X]=x+1$:

$X$ and $Y$ are independent random variables, $E(X)=0$, $E(Y)$ is finite, how to prove $E(|X+Y|)\geq E(|Y|)$?

Expected number of tosses of a die

Expectation problem from a question paper.

Interpret discrete expected value problem?

Finding Expected Value and Variance from a Systematic Sample

Expectation of repeated number 3 times on dice

Calculating expectation of a truncated random variable.

Expected value: what is wrong with my reasoning?

Finding $E(\hat{p})$ and $V(\hat{p})$ of a sample proportion

A fair die is rolled 14 times. Let X be the number of faces that appear exactly 2 times. Find Var(X).

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