Variance of hearts in eight cards

Eight cards are dealt from a standard 5252-card deck. What is the variance of the number of hearts dealt?

Show hints (2)+
  1. Hearts dealt is hypergeometric (N=52,K=13,n=8N=52, K=13, n=8).
  2. Var=nKNNKNNnN1=1.54451\operatorname{Var}=n\tfrac{K}{N}\tfrac{N-K}{N}\tfrac{N-n}{N-1}=1.5\cdot\tfrac{44}{51}.

Answer

Reveal answer →

2.588 (± 0.01)

Want the full step-by-step worked solution? It's part of Premium - along with a worked solution for every question in the bank.

Asked at: SIG, Two Sigma

Related questions