Solved: The following data were obtained in a study of the
Chapter 11, Problem 11.47(choose chapter or problem)
The following data were obtained in a study of the relationship between the weight and chest size ofinfants at birth. Weight (kg) Chest Size (cm) 2.75 29.5 2.15 26.3 4.41 32.2 5.52 36.5 3.21 27.2 4.32 27.7 2.31 28.3 4.30 30.3 3.71 28.7 (a) Calculate r. (b) Test the null hypothesis that = 0 against the alternative that >0 at the 0.01 level of signicance. (c) What percentage of the variation in infant chest sizes is explained by dierence in weight?
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