Performance records for 18 salespersons are selected to investigate whether compensation methods are a significant motivational factor. $\begin{array}{lc}\
\text { Compensation Method } \quad\quad\quad\quad\quad\quad \quad \text { Sales }\
\begin{array}{|l|l|l|l|l|l|l|l|}
\hline \text { Straight Salary } & 18 & 12 & 22 & 28 & 28 & & \
\hline \text { Straight Commission } & 27 & 34 & 34 & 27 & 20 & 16 & 24 \
\hline \text { Salary plus Commission } & 11 & 17 & 27 & 14 & 30 & 22 & \
\hline
\end{array}\end{array}$
A Kruskal-Wallis test is to be performed with $\alpha$= 0.01.The null hypothesis is _______.
A)Group 1 = Group 2 = Group 3
B)Group 1 $\neq$ Group 2 $\neq$ Group 3
C)Group 1 $\ge$ Group 2 $\ge$ Group 3
D)Group 1 $\le$ Group 2 $\le$ Group 3
E)Group 1 $\le$ Group 2 $\ge$ Group 3

Question

Performance records for 18 salespersons are selected to investigate whether compensation methods are a significant motivational factor. $\begin{array}{lc}\
 \text { Compensation Method } \quad\quad\quad\quad\quad\quad  \quad \text { Sales }\
\begin{array}{|l|l|l|l|l|l|l|l|}
\hline \text { Straight Salary } & 18 & 12 & 22 & 28 & 28 & & \
\hline \text { Straight Commission } & 27 & 34 & 34 & 27 & 20 & 16 & 24 \
\hline \text { Salary plus Commission } & 11 & 17 & 27 & 14 & 30 & 22 & \
\hline
\end{array}\end{array}$
 A Kruskal-Wallis test is to be performed with $\alpha$= 0.01.The null hypothesis is _______.
A)Group 1 = Group 2 = Group 3
B)Group 1 $\neq$ Group 2 $\neq$ Group 3
C)Group 1 $\ge$ Group 2 $\ge$ Group 3
D)Group 1 $\le$ Group 2 $\le$ Group 3
E)Group 1 $\le$ Group 2 $\ge$ Group 3

Quizplus · Accepted Answer

The null hypothesis for a Kruskal-Wallis test typically states that there is no difference between the medians of the groups being compared, implying that all groups are equal in terms of the median of the dependent variable.

Performance Records for 18 Salespersons Are Selected to Investigate Whether