This preview shows pages 1–5. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Click to edit Master subtitle style 9/26/11 STAT 201 Binomial & Poisson Distribution 9/26/11 Binomialdistribution Properties: 1. Experiment consist of n identical & independent trials 2. Each trial has only two outcomes , labeled as “success” and “failure” 3. the probability of a success in each trial , denoted as p, remains constant 4. We are interested in x, the number of success observed during the n trials. 9/26/11 Binomialdistribution Formula: 2 probability of x successes in n trials: ( ) (1 ) or Use Binomial Table! mean: variance: (1 ) st.dev.: (1 ) n x n x x P x C p p n p n p p n p p μ σ σ = = ⋅ = ⋅ ⋅ = ⋅ ⋅ 9/26/11 Binomialdistribution Example: • 523 (pg. 224) A bank manager has recently examined the credit card account balances for the customers of her bank and found that 20% have an outstanding balance that is at the credit card limit. Suppose the manager randomly selects 15 customers and finds 4 that have balances at the limit. Assume that the properties of the binomial distribution apply.properties of the binomial distribution apply....
View
Full
Document
This note was uploaded on 09/26/2011 for the course STAT 201 taught by Professor Drex during the Spring '04 term at Drexel.
 Spring '04
 DREX
 Statistics, Binomial, Poisson Distribution

Click to edit the document details