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  2. Monty Hall problem - Wikipedia

    en.wikipedia.org/wiki/Monty_Hall_problem

    If the car is behind door 1, the host can open either door 2 or door 3, so the probability that the car is behind door 1 and the host opens door 3 is ⁠ 1 / 3 ⁠ × ⁠ 1 / 2 ⁠ = ⁠ 1 / 6 ⁠. If the car is behind door 2 – with the player having picked door 1 – the host must open door 3, such the probability that the car is behind door ...

  3. Sortition - Wikipedia

    en.wikipedia.org/wiki/Sortition

    In governance, sortition is the selection of public officials or jurors at random, i.e. by lottery, in order to obtain a representative sample. [1] [2] [3] [4]In ancient Athenian democracy, sortition was the traditional and primary method for appointing political officials, and its use was regarded as a principal characteristic of democracy.

  4. Quick Pick vs Picking Your Own Lotto Numbers: Is One ... - AOL

    www.aol.com/quick-pick-vs-picking-own-115700389.html

    Those $1 and $2 tickets can seem tempting since they are at a lower price point, but they also have lower prize levels. More expensive tickets may have lower odds of winning, but the prizes will ...

  5. Guess 2/3 of the average - Wikipedia

    en.wikipedia.org/wiki/Guess_2/3_of_the_average

    Level 1 players would assume that everyone else was playing at level 0, responding to an assumed average of 50 in relation to naive play, and thus their guess would be 33 (2/3 of 50). At k-level 2, a player would play more sophisticatedly and assume that all other players are playing at k-level 1, so they would choose 22 (2/3 of 33). [9]

  6. Simple random sample - Wikipedia

    en.wikipedia.org/wiki/Simple_random_sample

    If a systematic pattern is introduced into random sampling, it is referred to as "systematic (random) sampling". An example would be if the students in the school had numbers attached to their names ranging from 0001 to 1000, and we chose a random starting point, e.g. 0533, and then picked every 10th name thereafter to give us our sample of 100 ...

  7. Two envelopes problem - Wikipedia

    en.wikipedia.org/wiki/Two_envelopes_problem

    In order that the reasoning in steps 6 and 7 is correct whatever amount happened to be in Envelope A, we apparently believe in advance that all the following ten amounts are all equally likely to be the smaller of the two amounts in the two envelopes: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 (equally likely powers of 2 [13]). But going to even ...

  8. Kentucky Lottery - Wikipedia

    en.wikipedia.org/wiki/Kentucky_Lottery

    Players choose five white ball (1-70) and one Mega Ball (1-25) or they can select the Quick Pick option to let the computer randomly select their numbers. Each play is $2 and for an additional $1 per play, the Megaplier can be added for a chance to multiply winnings (except the jackpot).

  9. Birthday problem - Wikipedia

    en.wikipedia.org/wiki/Birthday_problem

    The probability of any two people not having the same birthday is ⁠ 364 / 365 ⁠. In a room containing n people, there are (n 2) = ⁠ n(n − 1) / 2 ⁠ pairs of people, i.e. (n 2) events. The probability of no two people sharing the same birthday can be approximated by assuming that these events are independent and hence by multiplying ...