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10 cards from this deck
Working backwards from desired probability
Must be whole number; can't have fractional trials
Pr(X≥1)=1−Pr(X=0)Pr(X \geq 1) = 1 - Pr(X = 0)Pr(X≥1)=1−Pr(X=0)
Reverses the inequality sign
Fixed nnn, two outcomes, constant ppp, independent trials
(1−p)n(1-p)^n(1−p)n or qnq^nqn where q=1−pq = 1-pq=1−p
When inequality can't be solved algebraically
Pr(X=0)<0.05Pr(X = 0) < 0.05Pr(X=0)<0.05
Larger sample size
Number of trials or sample size
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