Random Samples of Employees from Three Different Departments of MNM

Essay

Random samples of employees from three different departments of MNM Corporation showed the following yearly incomes in $1,000).
$\begin{array}{lll}\text { Department A }&\text { Department B }&\text { Department C }\\40 & 46 & 46 \\37 & 41 & 40 \\43 & 43 & 41 \\41 & 33 & 48 \\35 & 41 & 39 \\38 & 42 & 44\end{array}$ At α = .05, test to determine if there is a significant difference among the average incomes of the employees from the three departments. Use both the critical and p-value approaches.