As human resources manager of a manufacturing plant, you are quite concerned about recent reports of sexual and racial harassment from the production workers within the organization. In an effort to gain a better understanding of the apparent problems, you decide that it would be wise to interview a cross section of your employees about this and other issues in the workplace.

a. Using the frame of employees provided in the file P8_27.XLS, select a subset of 30 production workers stratified by sex with proportional sample sizes.

b. Next, select another subset of 30 workers stratified by race with proportional sample sizes.

c. Finally, select one more subset of 30 workers stratified by both sex and race (e.g., Black women, White men, Asian women, Hispanic men, etc.) with proportional sample sizes.

d. Explain how the human resources manager could apply cluster sampling in selecting a sample of size 30 from this frame. What are the advantages and disadvantages of employing cluster sampling in this case?