Question

5.1 The county government in a city that is dominated by a large state university is concerned that a small subset of its population has been overutilized in the selection of residents to serve on county court juries. The county decides to determine the mean number of times that an adult resi- dent of the county has been selected for jury duty during the past 5 years. They will then compare the mean jury participation for full-time students to that of nonstudents. a. Identify the populations of interest to the county officials. b. How might you select a sample of voters to gather this information?

Answer 1

Answer:

The county government in city that is dominated by a large state university is concerned that a small subset of its population has been overutilized in the selection of residents to serve on county court juries.

a)

" All the adult residents of the county"

is the the adult residents of the county"( is the population of interest. They have to calculate
the mean time of their participation in jury duty. They also have to compare groups of full time students and non-students of the population.

b) We may use any method of selecting random samples according to the variability within the population. Here, the government can consult the records of jury duty in the past years and then take a big sample or complete data, but that can be costly. Therefore, simple random sampling is the best way to select a random sample for the given population.