Random Samples of Employees from Three Different Departments of MNM

question 143

Essay

Random samples of employees from three different departments of MNM Corporation showed the following yearly incomes (in $1,000).
At   .05, test to determine if there is a significant difference among the average incomes of the employees from the three departments. Show the complete ANOVA table.

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Definitions:

Ratio

A quantitative relationship between two numbers, indicating how many times one value is contained or can contain the other.

Sample Variances

A measure of the variance (spread or variability) within a sample data set.

Null Hypothesis

A statement in hypothesis testing that there is no significant difference or effect, serving as the default assumption to be tested against alternative hypotheses.

Population Variances

A measure of the dispersion or spread of a set of data points within a population.