This preview shows page 1. Sign up to view the full content.
73 Testing a Claim About a Proportion
Testing Claims About a Population Proportion p
Assumptions
1.
The sample observations are a simple random sample.
2.
The conditions for a binomial distribution are satisfied.
3.
The conditions
are both satisfied so the binomial distribution of
sample proportions can be approximated by a normal distribution with
5 and
5
np
nq
≥≥
and
np
npq
μσ
==
.
Notation
n
= sample size or number of trials
ˆ
x
p
n
=
(sample proportion)
p
= population proportion (used in the null hypothesis)
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 04/08/2008 for the course MAT 143 taught by Professor Stone during the Spring '07 term at North Shore Community College.
 Spring '07
 Stone
 Statistics, Binomial

Click to edit the document details