The article Bone Density and Insertion Torque asPredictors of Anterior Cruciate Ligament
Chapter 12, Problem 56(choose chapter or problem)
The article Bone Density and Insertion Torque asPredictors of Anterior Cruciate Ligament Graft FixationStrength (The Amer. J. of Sports Med., 2004: 14211429)gave the accompanying data on maximum insertion torqueand yield load (N), the latter being one measure ofgraft strength, for 15 different specimens.a. Is it plausible that yield load is normally distributed?b. Estimate true average yield load by calculating a confidenceinterval with a confidence level of 95%, and interpretthe interval.c. Here is output from Minitab for the regression of yieldload on torque. Does the simple linear regression modelspecify a useful relationship between the variables?
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