Hypergeometric Distribution:
C1 C2
R1 x y r1
R2 z w r2
c1 c2 N
P(X=x) = [(C1 choose x)(c2 choose y)]/(N choose (x+y))
Hypergeometric Distribution (MathWorld) - https://mathworld.wolfram.com/HypergeometricDistribution.html
Fisher's Exact Test, Lady tea tasting (The Pennsylvania State University ) - https://online.stat.psu.edu/stat504/lesson/4/4.5
Notes: Hypothesis Testing, Fisher’s Exact Test (The University of Utah) - https://users.cs.utah.edu/~jeffp/teaching/cs3130/lectures/L15-HypothesisTests1.pdf
STAT 226 Lecture 7 Section 2.6 Fisher’s Exact Tests (University of Chicago) - https://galton.uchicago.edu/~yibi/teaching/stat226/2022/L07.pdf