Question

1. Many UofO College employees take classes at the school. An instructor was interested in the average number of classes taken by a typical UofO employee, so he asked UofO employees that he en- countered in the halls of Building 16 how many classes they were taking during the current term. He talked with 104 people and the table below summarizes his results.

   Classes Taken Frequency

   0 26 1 52 2 13 3 13

   Describe each of the following for this scenario:

   • the population
   • the sample, and describe the type of sampling used.
   • the parameter, and calculate a numeric value if possible. • the statistic, and calculate a numeric value if possible.
   • the variable

Answer 1

Classes Taken (x)	Frequency(f)
0	26
1	52
2	13
3	13

the population is the UofO College employees.

This is an example of convenience sampling as the instructor sampled from employees he encountered in the halls of Building 16. Sample is the 104 UofO College employees that he talked to.

The parameter is the population mean number of classes taken by a typical UofO employee.

the sample mean is the statistic

variable here is the number of classes taken.