Answer Happy

6. Our bodies have a natural electrical field that is known to help wounds heal. Does changing the field strength slow healing? A series of experiments with newts investigated this question. In one experiment, the two hind limbs of 11 newts were assigned at random to either experimental or control groups. The electrical field in the experimental limbs was reduced to zero by applying a voltage. The control limbs were left alone. Here are the rates at which new cells closed a razor cut in each limb, in micrometers per hour. Newt 1 2 3 4 5 6 7 8 9 10 11 Control Limb 36 41 39 42 44 39 39 33 20 49 30 31 Experimental 28 33 27 33 38 45 28 23 47 33 Limb a. Create the null and alternative hypothesis. Assume a = 0.05 b. Report the test statistic. c. Report the p-value d. Give a conclusion in context of the problem.