-(Constant),9.81,1.50,.00,6.54,.000
-Mean time between failures (months) ,3.10,.10,.99,32.43,.000
-Ratio of working to non-working time,1.09,1.78,.02,.61,.552
+(Constant),10.59,3.11,.00,3.40,.002
+Mean time between failures (months) ,3.02,.20,.95,14.88,.000
+Ratio of working to non-working time,-1.12,3.69,-.02,-.30,.763