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 reaction time in hundredths of a second. Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. $$\begin{array} { c c c c c }
&& { \text { Dosage } } \
\text { Participant } & \text { Placebo } & 15 \mathrm { mg } & 30 \mathrm { mg } & 60 \mathrm { mg } \
\hline 1 & 36 & 32 & 20 & 18 \
2 & 35 & 40 & 25 & 27 \
3 & 40 & 42 & 30 & 24
\end{array}$$

Question

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 reaction time in hundredths of a second. Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. $$\begin{array} { c c c c c } 
&& { \text { Dosage } } \
\text { Participant } & \text { Placebo } & 15 \mathrm { mg } & 30 \mathrm { mg } & 60 \mathrm { mg } \
\hline 1 & 36 & 32 & 20 & 18 \
2 & 35 & 40 & 25 & 27 \
3 & 40 & 42 & 30 & 24
\end{array}$$

Quizplus · Accepted Answer

The Answer of 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 reaction time in hundredths of a second. Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. $$\begin{array} { c c c c c } 
&& { \text { Dosage } } \
\text { Participant } & \text { Placebo } & 15 \mathrm { mg } & 30 \mathrm { mg } & 60 \mathrm { mg } \
\hline 1 & 36 & 32 & 20 & 18 \
2 & 35 & 40 & 25 & 27 \
3 & 40 & 42 & 30 & 24
\end{array}$$

Drug Testing Often Involves Giving Participants Each of the Several