The CEO of ABC manufacturing commissioned a study to look at the differences between the current salaries of her employees by employee job title. There were three job categories: clerical, custodial, and managerial. The study collected current salary data of the three groups and the researcher conducted a statistic and the results are presented below. Using the five steps of hypothesis testing, explain what the researcher might have done, including the appropriate analysis, and interpret the results. Are there any problems with this study? If so, explain what they are.

Average Salary

Clerical (n= 363) $27,838.54

Custodial (n= 27) $30,938.89

Manager (n= 84) $63,977.80

Test statistic = 434.48, p< .05

Formulate the null hypothesis and alternative hypothesis

Determine if null hypothesis should be rejected or retained.