7-3 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 5npnq≥≥and npnpqμσ==. Notation n= sample size or number of trials ˆxpn=(sample proportion) p= population proportion (used in the null hypothesis)
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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.