P(exactly n Heads in 2n fair flips) = C(2n, n)/4^n (eq 2.65) against
the Stirling form 1/sqrt(pi n) (eq 2.66).
Arguments
- n
half the number of flips, >= 1.
Value
list(n, approx, exact, relative_error).
References
Morin, D. J. (2016). Probability: For the Enthusiastic
Beginner. Createspace. Eqs. (2.65)-(2.66).
Examples
HalfHeads(50)$relative_error
#> [1] 0.002503086
