April 2015
Beginner
400 pages
8h 45m
English
Content preview from Probability and Statistics
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Appendix A
Test Based on Normal Distributions
A.1 Z-Test for Proportions
A.1.1 Test of Significance for Single Proportion
Suppose a large sample of size n is taken from a normal population. To test the significant difference between the sample proportion p and population proportion P, we use the statistic
where n is the sample size and Q = 1 − P.
Note Limits for population proportion P are given by p ± 3
where q = 1 − p.
Example
A wholesaler in apples claims that only 4% of the apples supplied by him or her are defective. A random sample of ...
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