AP4.41 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. Variable N Mean StDev Diabetic mice 24 13 . 090 4. 839 Normal mice 18 10 . 022 2. 915 Minimum 01 Median 03 Maximum 1 . 050 10 .038 12 . 650 17. 038 22 . 600 4 . 950 8 . 238 9 . 250 12 . 375 16 . 100 Is there convincing evidence at the o - 0.05 level that the mean electrical potential differs for normal mice and mice with diabetes? 1. What are we being asked to do with this problem? 2. Have the conditions been met to do this? 3. What would your answer to the question be and how do you support your