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Q&A Meta

Posts by DNB‭

74 posts
Score Age
80%
+6 −0
Meta Why doesn't \$ work?

2 answers  ·  posted 3y ago by DNB‭  ·  edited 2y ago by Monica Cellio‭

Question bug status-completed
71%
+3 −0
Q&A Why would skyrocketing the numbers of doors help laypeople intuit the Monty Hall Problem?

1 answer  ·  posted 3y ago by DNB‭  ·  edited 3y ago by DNB‭

Question probability
66%
+2 −0
Meta Why isn't MathJax table appearing?

1 answer  ·  posted 3y ago by DNB‭  ·  edited 3y ago by celtschk‭

Question bug MathJax-rendering
66%
+2 −0
Q&A How can I deduce which operation removes redundacies?

3 answers  ·  posted 4y ago by DNB‭  ·  edited 3y ago by DNB‭

Question probability
66%
+2 −0
Q&A $\sum_{k=0}^{n} \binom{n}{k}=2^{n} \overset{?}{\iff} \sum_{k=0}^{n} \binom{2n+1}{k}=2^{2n}$

1 answer  ·  posted 3y ago by DNB‭  ·  edited 3y ago by DNB‭

Question combinatorics
60%
+1 −0
Q&A How's it possible to arrange 0 objects? How can 0! = 1?

3 answers  ·  posted 3y ago by DNB‭  ·  edited 3y ago by Quintec‭

Question combinatorics
60%
+1 −0
Meta Why was my question closed: If Alice must've have classes on at least 2 days, why do you need the intersection of 3 's?

1 answer  ·  posted 3y ago by DNB‭  ·  edited 3y ago by Canina‭

Question discussion allowed-questions
60%
+1 −0
Meta Why isn't \hline rendering here, when it does on Stack Exchange? [duplicate]

0 answers  ·  posted 3y ago by DNB‭  ·  closed as duplicate 3y ago by Monica Cellio‭

Question bug
50%
+0 −0
Q&A If Alice must've have classes on at least 2 days, why do you need the intersection of 3 $A_i^C$'s? [closed]

0 answers  ·  posted 3y ago by DNB‭  ·  edited 3y ago by DNB‭

Question probability
50%
+0 −0
Q&A How does $\lim\limits_{n \to \infty} \dfrac{p[s + (1 - s)c^n]}{p[ s + (1 - s)c^n] + (1 - p)[s + (1 - s)w^n]} = p?$

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by r~~‭

Question limits
50%
+1 −1
Q&A Intuitively, why does A, B independent $\iff$ A, $B^C$ independent $\iff A^C, B^C$ independent?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by JRN‭

Question probability
50%
+0 −0
Q&A How does the change of variable $\color{red}{r↦n−r}$ transmogrify $\sum\limits_{r=0}^n2^{n-r}\binom{n+r}{n}=2^{2n}$ into $\sum\limits_{k=0}^{n} \frac{\binom{2n-k}{n}}{2^{2n-k}}=1$?

1 answer  ·  posted 3y ago by DNB‭  ·  edited 3y ago by Moshi‭

Question summation
50%
+1 −1
Q&A Why $\color{red}{k\dbinom{k}{1}} \neq$ "first choose the k team members and then choose one of time to be captain"?

1 answer  ·  posted 3y ago by DNB‭  ·  edited 3y ago by Wolgwang‭

Question probability
50%
+0 −0
Q&A "A occurred" vs. "something must happen"

1 answer  ·  posted 3y ago by DNB‭  ·  edited 3y ago by DNB‭

Question probability
50%
+1 −1
Q&A In general, does $\color{forestgreen}{P(A|M)} + \color{red}{P(B|M)} = 1$?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by whybecause‭

Question probability
50%
+1 −1
Q&A Acceptable, usual to write $\ge 2$ pipes simultaneously?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by Derek Elkins‭

Question probability
50%
+0 −0
Q&A How does $P(C > D \mid C = 2) \neq P(C > D \mid C \neq 2)$ prove that B > C depends on C > D?

0 answers  ·  posted 3y ago by DNB‭  ·  edited 3y ago by DNB‭

Question probability
50%
+2 −2
Q&A What story and one-digit Natural Numbers explain Bayes' Theorem chart most simply?

0 answers  ·  posted 3y ago by DNB‭  ·  edited 3y ago by Moshi‭

Question probability
50%
+0 −0
Q&A "the people who move have a percentage of Democrats which is between these two values" — How does this furnish intuition for Simpson's Paradox?

0 answers  ·  posted 3y ago by DNB‭  ·  edited 3y ago by DNB‭

Question probability
42%
+1 −2
Q&A Intuitively, why would organisms — that after one minute, will either die, split into two, or stay the same, with equal probability — all die ultimately?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by Peter Taylor‭

Question probability
42%
+1 −2
Q&A In $w_{k + 1} - w_k = (\frac{1 - p}{p})^{exponent}(w_1 - w_0)$, why isn't exponent $k + 1$?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by leovt‭

Question probability
40%
+0 −1
Q&A How can a 15 year old construe the LHS of Generalized Vandermonde's Identity, when it lacks summation limits and a summation index?

2 answers  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by r~~‭

Question summation
40%
+0 −1
Q&A If C = Calvin wins the match, and $X \thicksim Bin(2, p) =$ how many of the first 2 games he wins — then why P(C|X = 1) = P(C)?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by Peter Taylor‭

Question probability
40%
+0 −1
Q&A Can the bijection for the Lost Boarding Pass Probability Problem, be formulated or pictured?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by r~~‭

Question combinatorics
40%
+0 −1
Q&A How would you vaticinate to $-w_k$ from both sides of $w_{k + 1} = \dfrac{w_k - (1 - p)w_{k - 1}}{p}$?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by Giannis‭

Question probability