Refer to the data in Exercise 13.33. (a) Use the Z test for testing the equality of
Question:
(a) Use the Z test for testing the equality of two population proportions with a two-sided alternative. Verify the relation x2 = Z2 by comparing their numerical values.
(b) If the alternative is that the incidence rate is lower for the vaccinated group, which of the two tests should be used?
In Exercise 13.33.
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Vaccinated Not vaccinated 70 Total Hepatitis No Hepatitis Total 549 534 1083 538 464 81 1002
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a Denote by p 1 and p 2 the two population proportions We ...View the full answer
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Related Book For
Statistics Principles And Methods
ISBN: 9780470904114
7th Edition
Authors: Richard A. Johnson, Gouri K. Bhattacharyya
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