The body’s natural electrical field helps wounds heal. If diabetes changes this field, it might explain why people with diabetes heal more slowly. A study of this idea compared randomly selected normal mice and randomly selected mice bred to spontaneously develop diabetes. The investigators attached sensors to the right hip and front feet of the mice and measured the difference in electrical potential

(in millivolts) between these locations. Graphs of the data for each group reveal no outliers or strong skewness. The following computer output provides numerical summaries of the data.27 Variable N Mean StDev Minimum Diabetic mice 24 13.090 4.839 1.050 Normal mice 18 10.022 2.915 4.950 Q1 Median Q3 Maximum 10.038 12.650 17.038 22.600 8.238 9.250 12.375 16.100 The researchers want to know whether the difference in mean electrical potentials between normal mice and mice with diabetes is statistically significant at the a = 0.05 level. Carry out a test and report your conclusion.