You are to design a sampling strategy for a survey about job stress throughout the criminal justice system, including police officers, defense attorneys, prosecutors, judges, correctional officers, probation officers, and parole officers. Describe a sampling design in which the population is all employees in the system and the sampling elements are the individual employees. Define in your description the sampling frame and the sampling units. Now propose a different sampling design in which the sampling units and the elements are not the same. What are the advantages and disadvantages of the two designs?