Question

Exponential Distribution with different parameters, calculating variance and expectation

score 113 · Answer 1 · 2026-03-28 18:14:15

113

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Exponential Distribution with different parameters, calculating variance and expectation

Published on 28 Mar 2026 - 18:14

score 3.2k · Answer 2 · 2017-03-30 21:52:33

3.2k

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If $X$ and $Y$ are uniform random variables, and $Z = \max(X,Y)$, then what is the expected value of $Z$?

Published on 30 Mar 2017 - 21:52

score 2.5k · Answer 3 · 2017-03-31 04:13:46

2.5k

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Shoelaces in a box. Pull until everything is in loops

Published on 31 Mar 2017 - 4:13

score 58 · Answer 4 · 2017-03-31 14:58:55

58

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Find $a$ such that $E[(X-a)^4]$ is minimised

Published on 31 Mar 2017 - 14:58

score 1.3k · Answer 5 · 2017-03-31 18:17:28

1.3k

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Expected number of searches out of $n$ items to find desired item

Published on 31 Mar 2017 - 18:17

score 288 · Answer 6 · 2017-03-31 20:57:08

288

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Find a rule for the number of items to be stocked in order to maximize the expected income

Published on 31 Mar 2017 - 20:57

score 734 · Answer 7 · 2026-03-27 00:56:54

734

Views

Maximum of independent beta random variables.

Published on 27 Mar 2026 - 0:56

score 70 · Answer 8 · 2026-04-01 03:10:45

70

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Expectation of random variable with density function $\frac{1}{18}(6-x), 0\leq x\leq 6$.

Published on 01 Apr 2026 - 3:10

score 68 · Answer 9 · 2017-04-03 04:31:31

68

Views

Expected Unique Values From Limited Deck

Published on 03 Apr 2017 - 4:31

score 192 · Answer 10 · 2017-04-03 05:29:43

192

Views

Decent lower bound on expected value

Published on 03 Apr 2017 - 5:29

score 49 · Answer 11 · 2017-04-03 09:35:07

49

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Asymptotic Computation with Expectations

Published on 03 Apr 2017 - 9:35

score 234 · Answer 12 · 2017-04-03 14:24:46

234

Views

Compute expectation of r.v. defined with a normal distribution and a folded normal distribution

Published on 03 Apr 2017 - 14:24

score 637 · Answer 13 · 2017-04-03 17:11:35

637

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$\sum p(x,y) \log p(x,y) = \sum p(x,y) \log p(x)p(y)$ (zero mutual information) implies independence

Published on 03 Apr 2017 - 17:11

score 396 · Answer 14 · 2017-04-04 04:21:58

396

Views

Frog jumping between states, expected time

Published on 04 Apr 2017 - 4:21

score 235 · Answer 15 · 2026-03-25 08:07:53

235

Views

Random variables with rapid variation have finite moments

Published on 25 Mar 2026 - 8:07

List Question

Exponential Distribution with different parameters, calculating variance and expectation

If $X$ and $Y$ are uniform random variables, and $Z = \max(X,Y)$, then what is the expected value of $Z$?

Shoelaces in a box. Pull until everything is in loops

Find $a$ such that $E[(X-a)^4]$ is minimised

Expected number of searches out of $n$ items to find desired item

Find a rule for the number of items to be stocked in order to maximize the expected income

Maximum of independent beta random variables.

Expectation of random variable with density function $\frac{1}{18}(6-x), 0\leq x\leq 6$.

Expected Unique Values From Limited Deck

Decent lower bound on expected value

Asymptotic Computation with Expectations

Compute expectation of r.v. defined with a normal distribution and a folded normal distribution

$\sum p(x,y) \log p(x,y) = \sum p(x,y) \log p(x)p(y)$ (zero mutual information) implies independence

Frog jumping between states, expected time

Random variables with rapid variation have finite moments

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