A study was conducted at the Department of Veterinary Medicine at Virginia Polytechnic Institute and State University to determine if the "strength" of a wound from surgical incision is affected by the temperature of the knife. Eight dogs were used in the experiment. The incision was performed in the abdomen of the animals. A "hot" and "cold" incision was made on each dog and the strength was measured. The resulting data appear below.

(a) Write1 an appropriate: hypothesis to determine if there is a significant difference in strength between the hot and cold incisions.

(b) Test the hypothesis using a paired /-test. Use a P-value in yourconclusion.

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Dog Knife Hot Cold Hot: Cold Hot. Cold Hot Cold Hot Strength 5120 8200 10000 s000 10000 9200 10000 6200 10000 10000 7900 5200 3 4 Cold Hot Cold 6. Hot 510 885 Cold Hot. 1020 4G0 Cold 4,