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answersWelcome!
Just started to learn probability theory from scratch. So do not throw complex formulas :D
Is seems to be a simple Venn diagram:
The Question Is P(A U B) = ?
The answer 15% + 55% + 10% = 80%
There seems to be an intersection, and at the same time, they are not mutually exclusive, the inclusion of the intersectio...

asked April 16th 20 at 10:11

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answerHi all. There is a task:
Let N be a positive random variable with PMF as:
p_N(n) = 1/2*n*2^(-n)
As soon as we see the numerical value of N, create a random variable with PMF K, uniform on the set {1, 2, ..., 2n}.
Question: let A be the event that K is even. Find P(A|N=n) and P(A), i.e. to establish whether the events A and...

asked April 8th 20 at 02:42

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answerThe phone number erased 3 digits. Need to find the probability that among these numbers there is no 1,3 and 5.
343 variant in which no 1 3 and 5? Doesn't add up.

asked April 8th 20 at 01:56

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answerLet's say I roll the dice. Is there a formula, but certainly is that all the 1, 2, 3 .. 6 when N tests was approximately equal frequency of occurrence, with a certain margin of error.
Need to limit loop to generate the number of tests.

asked April 7th 20 at 11:01

5

answersHello, I apologize for maybe stupid question. Write API for interacting with the Bookmaker.
Initially, the coefficients will be set by the moderator for each match for some unknown formula.
I have only odds and the amount of time elapsed since the beginning of the match at the time with a goal from either side. And the tas...

asked April 7th 20 at 10:42

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answerFound two definitions from wiki for example, this
"the system of random events such that the result produced by a random experiment will occur one and only one of them. "
and other sources you come across
"the system of random events such that the result produced by the random experiment will be one of them"
That is, in th...

asked April 7th 20 at 08:56

0

answerThere is a slot 5x3 (3 rows), approximately like this:
(01) (02) (03) (04) (05)
(06) (07) (08) (09) (10)
(11) (12) (13) (14) (15)
In total there are 11 different options that can fall out (example: A, K, Q, J, 10...).
That is, in a series of 11 different options, of which 3 are shown.
In a row can't have the same options.
H...

asked April 3rd 20 at 23:34

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answerAt the round table sitting 5 people, find the number of direct links to 2 of them always sat together. Though kill, I can not understand how it is solved... cu Tomorrow, and I child of such a problem can not solve

asked April 3rd 20 at 17:05

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answersHello! I make money opening cases (trunks) for one training project. So, is there a variant where the percentage of loss between the items is distributed evenly, depending on the price of the case (the chest)?
For example:
Price of case — 50 rubles
Things in it:
1 — 10 RUB (30%)
2 — 25 RUB (25%)
3 — 40 RUB (20%)
4 — 50 roub...

asked April 3rd 20 at 16:55

3

answersNot so long ago, the entrance test for an internship I came across the following question:Condition
There is a set of 100 unfair pennies from the i-th coin the probability of heads is 1/(2i+1) for (i = 1, 2, ... , 100). The results for each coin are independent. You threw all the coins once, what is the probability that we ...

asked April 2nd 20 at 17:22