4. End Result Hospital wants to assess the eff ectiveness of diabetes education through A1c levels. The hospital has created three groups. In the control group no instruction is provided, in group two instruction is provided by physicians, and in the third group RNs provide instruction. Are A1c levels diff erent between groups?

Control MD RN 10 7 6 7 6 5 5 4 5 14 8 7 12 11 7 8 7 6 6 5 4 10 9 8 9 10 7 5 5 4