weakly significantp = 0.070
The results of the one-sided two-sample T -tests are presented as following: the control group, the participants who were simply asked for a donation, donated more than the first treatment group who were offered the tote bag as a thank-you gift ( p = 0.048, mean.c = 28.76, Sd-c = 25.65, mean.t1 = 24.01, Sd.t1 = 25.74); the difference become insignificant when compared to the second treatment group for whom the statement is given ( p = 0.205, mean.c = 28.76, Sd.c = 25.65, mean.t2 = 27.93, Sd.t2 = 25.42); however, the difference between the control groups is only weakly significant ( p = 0.070, mean.t1 = 24.01, Sd.t1 = 25.74, mean.t2 = 27.93, Sd.t2 = 25.42).