Are mice right-handed or left-handed? In a study of this question, 320 mice of a highly inbred
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Suppose we assign an expected frequency of 8,000 to each category and perform a goodness-of-fit test; we find that X2s = 4.16, so at a = 0.05 we would reject the hypothesis of a 1:1 ratio and find that there is sufficient evidence to conclude that mice of this strain are (slightly) biased toward use of the left paw. This analysis contains a fatal flaw. What is it?
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Statistics For The Life Sciences
ISBN: 9780321989581
5th Edition
Authors: Myra Samuels, Jeffrey Witmer, Andrew Schaffner
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