Final answer:
Unit personnel know what residue to collect for turn-in based on Standard Operating Procedures; the department store employee satisfaction survey uses Cluster sampling; convenience sampling is used by the woman at the airport, and the teacher's method is also Cluster sampling; the Total Plate Count method is used to measure bacterial contamination in peanut butter; in the tableware-size study, key study components are identified such as population, sample, treatment, and response variable.
Step-by-step explanation:
In a military context, unit personnel would know what residue to collect and keep for turn-in based on Standard operating procedures (SOPs). These procedures provide a set of written instructions that document a routine or repetitive activity followed by an organization. The correct answer to the student's question is A. Standard operating procedures.
Survey Design Type
When the manager of a department store decides to measure employee satisfaction by selecting four departments at random and interviewing all the employees in those, the survey design is Cluster sampling. Each department can be seen as a cluster, and the survey involves random selection of full clusters, followed by a survey of all members within those clusters. The correct answer here is A. Cluster.
Name the Sampling Method
- The sampling method where a woman in the airport is selectively handing out questionnaires to travelers who seem available is an example of Convenience sampling, as it does not represent a random or systematic approach.
- When a teacher wants to know about students' homework and selects specific rows to ask students to present solutions, this method is Cluster sampling just like in the department store example, because she is selecting whole groups (rows) at once.
Measurements in Food Safety
To measure the concentration of bacterial contamination in processed peanut butter, the method that would typically be used is B. total plate count. This method involves spreading a sample on a nutrient agar plate and then incubating it to allow bacteria to grow, making it possible to count the colonies and estimate bacterial concentration.
Experimental Design and Ethics
In the study of how the size of tableware influences college students' food consumption, the population is all college students, the sample is the 100 college students chosen for the study, the experimental units are the individual students, the explanatory variable is the size of the tableware, the treatment is the use of tableware that is 20 percent smaller than normal, and the response variable is the amount of food consumed by each group.