Sample Examination Two 141 ion li SECTION II Part B Question 6 Spend about 25 mi

Question

Sample Examination Two 141 ion li SECTION II Part B Question 6 Spend about 25 minutes on this part of the exam. Percent of Section II grade-25 Show all your work. Indicate clearly the methods you use, because you will be graded and correctness of your method as well as on the accuracy and completeness of your results aplanations. 6 The owner of a small company is planning an economic impact study that will include information about local spending by the company's employees. Spending information is survey, so plans to select gathered by means of a detailed the owner initially a simple random sample of 8 and require only those to complete the The company has 32 employees in total. (a Explain how the simple random sample of 8 employees might be selected.

Explanation / Answer

Solution:-

a) The simple random sample of 8 employees might be selected from 32 employees in 10,518,300.

Total employees = 32

Employees to be selected = 8

Number of ways of selecting 8 employees = 32C8

Number of ways of selecting 8 employees = 10,518,300

In simple random sample each employee have the same chances of being selected.

b)

Individual contributor = 16

Proffesional level = 12

Managerial level = 4

Number of ways of selecting = 16C4 × 12C3 × 4C1

Number of ways of selecting = 1820 × 220 × 4 = 1,601,600

It is more sensible for the purpose of this study, to stratify by employee grade level.

By stratifying the represenation of the employee in the sample would be the same as representation of employee in the population. Otherwise there is a chance taht all members are selected from the same grade level if it was a simple random sample.

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