Babys Sleeping Position II The researchersin Exercise
Chapter 14, Problem 42(choose chapter or problem)
Babys Sleeping Position II The researchersin Exercise 14.40 also measured several other developmentalmilestones and their relationship to the infantspredominant sleep position.14 The results of theirresearch are presented in the table for the 320 infantsat their 4-month checkup.Milestone Score Prone Supine or Side PPulls to sit with no head lag Pass 79 144Fail 6 20 .21Grasps Rattle Pass 102 167Fail 3 1 .13Reaches for Object Pass 107 183Fail 3 5 .97Use your knowledge of the analysis of categorical datato explain the experimental design(s) used by theresearchers. What hypotheses were of interest to theresearchers, and what statistical test would theresearchers have used? Explain the conclusions thatcan be drawn from the three p-values in the last columnof the table and the practical implications that canbe drawn from the statistical results. Have any statisticalassumptions been violated?
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