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A survey found that in a sample of 100 families, 30 owned dogs (X1). Another survey, done 15 years ago, found that in a
A survey found that in a sample of 100 families, 30 owned dogs (X1). Another survey, done 15 years ago, found that in a sample of 60 families, 30 owned dogs (X2). At a 0.10 level of significance, has the proportion of dog owners changed over the 15-year period? a) Which are the null and alternative hypotheses? Ho P1 P2=0 H1: P1 P2 0 Ho P1 P2 0. H1: P1-P2
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Elementary Statistics A Step By Step Approach
Authors: Allan Bluman
8th Edition
73386103, 978-0073386102
