A Pediatrics Department became concerned about low morale and productivity of nursing staff after the chair of its General Pediatrics division left the organization due to retirement. After a nine-month search, the pediatrics Department was able to hire a specialized pediatrician chair for the General Pediatrics division and would like to evaluate the effect of the new leadership on productivity. Measurements before and after the new leadership took over are displayed in the table below. LrIN = U.O RIN dIIU UIIlers = U. KIV.