/sci/ - Science & Math » Thread #11457960

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Hit me with probability problem memes/ a prob sqt

Anonymous Tue 10 Mar 22:07:26 2020 No.11457960 View Reply Original Report

Quoted By: >>11458332

yo /sci/ I am working on some probability problems for a job application. Hit me with some probability memes / theory questions.

I want to have a broadened mind for this

pic related i guess

Anonymous

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Anonymous Tue 10 Mar 2020 22:15:05 No.11457975 Report

Quoted By: >>11458161 >>11458176 >>11458252

>yo /sci/ I am working on some probability problems for a job application. Hit me with some probability memes / theory questions.

Anonymous

Anonymous Tue 10 Mar 2020 23:26:50 No.11458161 Report

Quoted By: >>11458164

>>11457975
is it $10 or am i rarted

Anonymous

Anonymous Tue 10 Mar 2020 23:27:52 No.11458164 Report

Quoted By:

>>11458161
i mean 7.50! aaaaaaaa

Anonymous

Anonymous Tue 10 Mar 2020 23:32:05 No.11458176 Report

Quoted By: >>11458240 >>11458339

>>11457975
expected gains of $2.50

Anonymous

Anonymous Tue 10 Mar 2020 23:58:29 No.11458240 Report

Quoted By: >>11458260 >>11458575

>>11458176
The question is retarded because it’s misusing the word ‘average’. The chances, ULTIMATELY, are 50% 50%, you either lose or win money.

Anonymous

Anonymous Wed 11 Mar 2020 00:03:46 No.11458252 Report

Quoted By:

>>11457975
Will I win the lottery

Anonymous

Anonymous Wed 11 Mar 2020 00:07:08 No.11458260 Report

Quoted By:

>>11458240
there's nothing complicated about the problem. it's a simple "expected value" question, but with some conditional statements that change how you interpret the answer.
it's basically, "what is the expected value of a discrete random variable that has the distribution {20:1/2; 5:1/2}, interpreted as {value : probability ; etc}

Anonymous

Anonymous Wed 11 Mar 2020 00:37:10 No.11458332 Report

Quoted By: >>11458352 >>11458356 >>11458361

>>11457960
John and Arnold are friends; one is white, and one is black. John has an IQ 15 points higher than Arnold. What is the probability that John is black?

Anonymous

Anonymous Wed 11 Mar 2020 00:41:49 No.11458339 Report

Quoted By:

>>11458176
this is the correct answer

Anonymous

Anonymous Wed 11 Mar 2020 00:47:40 No.11458352 Report

Quoted By:

>>11458332
0.23% i think

Anonymous

Anonymous Wed 11 Mar 2020 00:49:50 No.11458356 Report

Quoted By:

>>11458332
50.13% chance, I think.

Anonymous

Anonymous Wed 11 Mar 2020 00:50:51 No.11458361 Report

Quoted By:

>>11458332
Also, Arnold is a bank teller involved in a feminist movement.

Anonymous

Anonymous Wed 11 Mar 2020 02:40:52 No.11458575 Report

Quoted By:

>>11458240
you have to do the old frequentist trick of pretending you can do the same experiment 1000 times

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