PSERC
17
Experimental Results:
Two-Sided Experiments: Details on
Overall Efficiency for Combined Trials
1.  Deviations Re-Stated as % of FP Revenues without Regulation:
           % Added                 % Changes              Combined
      Consumer Value         Supplier Profit Change
RTP    9.02 -6.99 2.02%
DRP 13.86 -17.52 -3.67%
Social Optimum  29.32 -22.57 6.75%
  (as comparison)
2.Statistically Valid Differences in Behavior from FP Results
(@ .95 level):
o           RTP vs. FP                    DRP vs. FP
o   Consumers     Sellers*            Consumers     Sellers*
Value/Profit + — + ? —
Quantities Bought/Sold:
Days — — ? — —
Nights + + ? — + ?
*Note:  With fewer sellers, statistical significance is harder to attain.