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lackboard/execute/content/file?cmd-view&content-id.-64; 2049,18course-id--20882_1 SHOW ALL OF YOUR WOR CHAPTER 7-Sampling and Sampling Distributions #2-Fill in the blank: In this problem, all fifty departments in this company have a two-digit Department ID Number. All 3,500 employees have a unique four-digit ID Number sample, the President of the company pulls 50 ID-numbered a) in a pieces of paper from an urn, recording the ID number selected, one at a time, returning the slip back to the urn before the next is selected b) In a numbers until his sample of 350 contains the proportionate amount of employees from each department. He then uses this sample to determine the life expectancy of employees at this company sample, the Chief Actuary randomly generates employee ID c) In a departments, from which each employee will receive a holiday dinner sample, the VP of Human Resources randomly selects ten d) In a number, and we decide to select every 7th person in line until we obtain a sample of 350 employees. sample, employees are lined up in increasing order of ID MacBook Pro

Explanation / Answer

a) Simple random sampling - President of the company randomly chooses 50 pieces of paper

with ID numbers from an urn.

b) Stratified sampling - In this scenario all the employees are assigned to their respective departments that is divided in sub-groups (known as strata) and then in that sub-groups IDs are randomly generated.

c) Cluster sampling - In this case 10 departments (clusters) are chosen at random and everyone in those departments are selected for a holiday dinner.

d) Systematic sampling - Here every 7th employee is selected in a systematic order when arranged in

ascending order of the employee IDs.

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