Probability a treated response is higher than k GLYPH<0> 1 controls GLYPH<14> Normal t with 2 df k = 2 k = 5 k = 10 k = 2 k = 5 k = 10 0 0.50 0.20 0.10 0.50 0.20 0.10 0.25 0.57 0.26 0.14 0.55 0.24 0.12 0.5 0.64 0.33 0.20 0.60 0.29 0.15 1 0.76 0.49 0.34 0.69 0.39 0.22 Percentage increase above chance GLYPH<14> Normal t with 2 df k = 2 k = 5 k = 10 k = 2 k = 5 k = 10 0 0 0 0 0 0 0 0.25 14 31 44 10 21 22 0.5 28 67 99 20 45 50 1 52 147 241 39 97 120 Table 1: In the absence of interference and dependence, the upper table gives the proba- bility that one treated response is higher than k GLYPH<0> 1 independent control responses when the treatment e⁄ect is an additive shift GLYPH<14> and the errors are independently drawn from either a standard Normal distribution or the t -distribution with 2 degrees of freedom. The lower table gives the percentage increase in this probability above chance; for example, 14% = (0 : 57 GLYPH<0> 0 : 50) = 0 : 50 . 23