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/sci/ - Science & Math

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8014367

/v/ is bad at math Anonymous Mon Apr 18 17:02:30 2016 No.8014367 [Reply] [Original]

Hey /sci/, I think this might be up your alley.
I'm not sure if we're just stupid, but we can't seem to determine if it's 2/3 or 1/2. We can all agree it's not Monty Hall.
So, in this situation, you're assured that you chose a meat bun. This removes the double natto box. This turns it into two situations: you chose the meat bun and your other choice is a natto ball, or you picked a meat bun and your next choice is the other meat bun: therefore, 1/2.
Or, do you double count the situation of choosing from the double meat box, as choosing Bun1 and then Bun2 produces the same outcome as Bun2 then Bun1, but counts as a separate choice, and, therefore, you've three situations but two result in a meat bun, therefore, 2/3.
We've arguments for both sides, but no one can apparently be proven true. Someone tried Haye's Theorem doubts that he used the right numbers, or maybe he could have used the right numbers.
I figured you guys might be able to math this better than people who hate talking about video games.

>>	Anonymous Mon Apr 18 17:03:06 2016 No.8014370 Not this shit again, it's 2/3

>>	Anonymous Mon Apr 18 17:06:56 2016 No.8014375 >>8014370

>>	Anonymous Mon Apr 18 17:07:18 2016 No.8014376 >>8014370 Can you give me an explanation? Is it because of the method I described, or is it some other reason? I'd like to be able to give an explanation the next time this comes up.

>>	The Fairy Queen Mon Apr 18 17:07:36 2016 No.8014378 >>8014367 >2/3 The results don't change if you remove the 2-natto box from the experiment entirely. The key is to locate the hidden aspect of Chen not knowing which box she drew the meat buns from. Also tell /v/ I said hi.

>>	Anonymous Mon Apr 18 17:08:33 2016 No.8014380 >>8014367 let [x,x] represent a box where x=m(meat), n(natto), -(empty space). The sample space for the second bun looks like: {[-,m] , [m, - ], [-, n]} equal probabilities => 2/3

>>	Anonymous Mon Apr 18 17:08:40 2016 No.8014382 It's 1/3, go away

>>	Anonymous Mon Apr 18 17:13:23 2016 No.8014398 >>8014382 Why do you say that?

>>	Anonymous Mon Apr 18 17:13:49 2016 No.8014400 File: 49 KB, 1046x903, delete.png [View same] [iqdb] [saucenao] [google] >>8014376 Yes, the probability of picking a golden ball first is twice as likely if you randomly picked box Gold Gold, in which case the next ball will be Gold => 2/3

>>	Anonymous Mon Apr 18 17:16:02 2016 No.8014402 >>8014400 >0.6666588 That's not 2/3 B T F O T F O 2/3 fags on suicide watch

>>	Anonymous Mon Apr 18 17:16:17 2016 No.8014404 File: 1.34 MB, 2322x4128, triple.jpg [View same] [iqdb] [saucenao] [google] >>8014400 So it's like the results of my attempt at a tree diagram?

>>	Anonymous Mon Apr 18 17:19:38 2016 No.8014416 >>8014404 Yes

>>	Anonymous Mon Apr 18 17:21:36 2016 No.8014420 >>8014398 She chooses the box and isn't allowed to pick another one or switch. It's like the Monty Hall problem but being forced to stay with Door 1.

>>	Anonymous Mon Apr 18 17:21:50 2016 No.8014421 >>8014416 Alright, cool. Math is fun when I want to do it.

>>	Anonymous Mon Apr 18 17:26:25 2016 No.8014428 >>8014404 Yes.

>>	Anonymous Mon Apr 18 17:28:48 2016 No.8014434 >>8014404 Yes

>>	Anonymous Tue Apr 19 00:36:32 2016 No.8015294 >>8014404 Yes

>>	Anonymous Tue Apr 19 01:13:38 2016 No.8015345 File: 14 KB, 728x441, bertrandBox.png [View same] [iqdb] [saucenao] [google] >>8014367 2/3

>>	Anonymous Tue Apr 19 01:19:29 2016 No.8015357 >>8014367 3 possible ways to pick a meat bun on first draw. Two of those ways would give you a meat bun if you picked from th same box again. 2/3 chansu here.

>>	Anonymous Tue Apr 19 01:21:56 2016 No.8015363 https://en.wikipedia.org/wiki/Monty_Hall_problem

>>	Anonymous Tue Apr 19 01:56:46 2016 No.8015431 >>8014367 Its self-evidently 1/2

>>	Anonymous Tue Apr 19 02:00:06 2016 No.8015440 66%

>>	Anonymous Tue Apr 19 02:11:12 2016 No.8015455 >>8015357 1/3rd since its box chosen

>>	Anonymous Tue Apr 19 15:48:49 2016 No.8016546 File: 51 KB, 992x423, explained.png [View same] [iqdb] [saucenao] [google] Two of the three possible meatbuns have another meatbun in the same box. It's really that simple, don't bother using obscure theorems or software to figure this out.

>>	Anonymous Tue Apr 19 15:54:42 2016 No.8016551 >>8016546 See >>8015455

>>	Anonymous Tue Apr 19 16:25:52 2016 No.8016601 File: 516 KB, 686x1000, 1456360260721.jpg [View same] [iqdb] [saucenao] [google]

>>	The Fairy Queen Tue Apr 19 16:47:33 2016 No.8016640 >>8016546 >not using Bayesian epistemology Well!

>>	Anonymous Tue Apr 19 16:58:53 2016 No.8016654 >>8016551 Selecting a box and then a bun is the same thing as just selecting a bun. Each bun still has 1/6 to be chosen, and each meatbun (now that we know which kind of bun we got) has 1/3.

>>	Anonymous Tue Apr 19 17:11:37 2016 No.8016691 I have 30 days till my A-Level maths exam, Is is possible to learn all of the topics C1, C2 and S1 by then? Because im a spastic and my teacher sucks is the reason why

>>

Anonymous Tue Apr 19 17:25:37 2016 No.8016707

>>8016691
Yep, just start on past papers right away. Use your book to start off with, they ask pretty much the same style of questions (almost) every year so just get used to them. Everything in those modules are a piece of piss, only VERY BASIC calculus.

>>	Anonymous Tue Apr 19 17:29:04 2016 No.8016710 File: 43 KB, 468x459, One Golden Ball at a Time.jpg [View same] [iqdb] [saucenao] [google] Where's my boys from the last thread at?

>>	Anonymous Tue Apr 19 17:32:20 2016 No.8016717 >>8014404 No. Jk yes

>>	Anonymous Tue Apr 19 20:16:14 2016 No.8017065 >>8014402 yep, it's /v/ alright

>>	Anonymous Tue Apr 19 20:18:16 2016 No.8017068 >>8016601 this cat has serious mental issues