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Question 14496: Identical Distribution Means the Complete Marginal, Not Just Its Mean

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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R0027-14496 · q-20261014-advance-20261029-r06-iid-sequence-0046

Original question and givens

Use the explicitly declared Bernoulli product-law model with exact p=21/29 in [0,1]. Infinite IID requires the complete identical Bernoulli marginal and mutual independence for every finite subfamily, represented here by the symbolic product-law cylinder certificate. Equal means, pairwise independence or checking one finite prefix is insufficient. Use exact reduced fractions with positive denominators, omitting /1 for integers. No law of large numbers, central limit theorem or additional Markov conclusion is asserted. left_index=20, right_index=37. Give (left_index,right_index,[0,zero_mass],[1,one_mass],identical?,full_Bernoulli_marginal_not_mean_only).

  • G001 — Use the explicitly declared Bernoulli product-law model with exact p=21/29 in [0,1]. Infinite IID requires the complete identical Bernoulli marginal and mutual independence for every finite subfamily, represented here by the symbolic product-law cylinder certificate. Equal means, pairwise independence or checking one finite prefix is insufficient. Use exact reduced fractions with positive denominators, omitting /1 for integers. No law of large numbers, central limit theorem or additional Markov conclusion is asserted. left_index=20, right_index=37. Give (left_index,right_index,[0,zero_mass],[1,one_mass],identical?,full_Bernoulli_marginal_not_mean_only).

Definition and scope

Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.

Step-by-step derivation

S001 · calculation

Before

Bernoulli zero-outcome mass := sub(1, 21/29)

After

Bernoulli zero-outcome mass = 8/29

Conditions: none

Compute exactly from original roles,complete pairings and established intermediates,retaining denominators,signs and zeros.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001

S002 · implies

Before

raw Bernoulli parameter=[21, 29]

After

normalized p=21/29;mass at0=8/29;mass at1=21/29;symbolic product-law model explicitly declared

Conditions: none

Retain the complete{0,1} marginal and the explicitly declared product-law premise.Infinite IID is not inferred from a data set,equal means or pairwise checks.

Step identifiers and dependencies

Rule: Bernoulli_complete_marginal_and_product_law_premise · Uses: G001, S001

S003 · implies

Before

indices=[20, 37];same declared Bernoulli product law

After

both complete marginals:mass0=8/29;mass1=21/29;identical=Yes

Conditions: none

List both outcome masses at each index,including zero masses for degenerate parameters.Equal means alone do not establish identical distribution for general variables,let alone independence.

Step identifiers and dependencies

Rule: IID_full_identical_marginal_not_general_mean_test · Uses: G001, S002

Reverse checks

  • S003 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S002 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S001 · premise_and_result_audit — Recompute Bernoulli zero-outcome mass with exact rational arithmetic, not rounded decimals.

Result

(20, 37, [0, 8/29], [1, 21/29], Yes, full_Bernoulli_marginal_not_mean_only)

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: 0e25cb4c8a056ff80456b1c261f1047c5ea1504c26354b6a000b30d0df080f45
  • candidate record SHA-256: fe1731641dbd41dc135f39a9d1154c2167edaa0ea8610782d813fb710e7431c0
  • semantic review receipt SHA-256: e49bf5eaa968c09ebac4ad538ce58251671ed922c957cee1471cfc7b68934bfe
  • question-first witness SHA-256: a7976057c26051fab92342fc95d48af224466c0e1e4ab6ae4c8811c02772e6da
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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