Mathematics, 05.10.2019 01:20 ashtonwishman
Bone anchors are used by orthopedic surgeons in repairing torn rotator cuffs (a common shoulder tendon injury among baseball players). the bone anchor is a threaded insert that is screwed into a hole that has been drilled into the shoul- der bone near the site of the torn tendon. the torn tendon is then sutured to the anchor. in a successful operation, the ten- don is stabilized and reattaches itself to the bone. however bone anchors can pull out if they are subjected to high loads. an experiment was performed to study the force required to pul out the anchor for three anchor types and two different foam densities (the foam simulates the natural variability found in real bone. two replicates of the experiment were performed. the experimental design and the pullout force response data are as follows. foam density anchor type low 190. 200 185, 190 210. 205 high 241, 255 230, 237 256. 260 (a) analyze the data from this experiment. (b) investigate model adequacy by constructing appropri- ate residual plots. (c what conclusions can you draw?
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Bone anchors are used by orthopedic surgeons in repairing torn rotator cuffs (a common shoulder tend...
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