Week 13

Question 1

binomials

Answer 1

exist when:
- measurement scale consists of 2 categories
- each individual observation into a sample is classified in only one of the 2 categoreies
- sample data consists of the frequency or number of individuals in each category

Question 2

binomial test

Answer 2

uses sample data to evaluate hypotheses about values of p and q for a population consisting of binomial data

Question 3

when p x n and q x n are both at least 10, the binomial distribution has

Answer 3

• shape of approximately normal
• mean of distribution: µ = p x n
• standard deviation of distribution σ = √npq

Question 4

z-score slightly beyond critical boundary

Answer 4

you should compute the Z-scores for both ends of the interval
- if any part of the Z-score interval is not in the critical region, the correct decision is to fail to reject H0