Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2008-08-26 11:54:35
- Macy
- Guest
Pls help me with Binomial probability
Computer disk has a chance of 0.15 being a faulty. The disks are sold in pack of five. Find the probability of a pack containing fewer than four faulty disks if you know it contains at least one faulty disk.
#2 2008-08-26 12:16:43
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: Pls help me with Binomial probability
Let the random variable X be the number of faulty disks in a pack.
Then
where
Offline
Pages: 1