Drug Testing Often Involves Giving Participants Each of the Several

Essay

Drug testing often involves giving participants each of the several dosages as well as a placebo (an inert substance). In this study, the dependent variable was a test that measured willingness to take risks (large scores mean more willingness). Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. $$\begin{array}{l}\begin{array} { c c c c c } &&\text { Dosage }\\\text { Participant } & \text { Placebo } & 15 \mathrm { mg } & 30 \mathrm { mg } & 60 \mathrm { mg } \\\hline 1 & 10 & 40 & 31 & 50 \\2 & 24 & 48 & 36 & 36 \\3 & 32 & 50 & 62 & 55\end{array}\end{array}$$