Buck or Two Plus has 100 stores in Toronto, Montreal and Vancouver, with 10,000 employees. Among the employees, there are 10% middle-level managers, 10% lower- level managers, 20% first-line supervisors, and 60% customer service representatives. The president of Buck or Two Plus asks you (a researcher) to conduct a survey and interviews among employees on employee satisfaction with career development. a) Probability sampling (3 marks). Assume that the sample size for the survey is 1,000 employees. . Explain 4 ways of selecting a probability sample of 1,000 from the list of 10,000 employees, and the advantages and disadvantages for each design. (2 marks) . Last year, another researcher conducted a survey on whether employees were in favour of working from home. The result was 65% of employees supported working from home, with the margin of error is +/- 3%, 19 times out of 20. Please explain this survey result. (1 mark) b) Non-probability sampling (3 marks). Assume that the sample size for the interviews is 100 employees. . Explain 3 ways of selecting a non-probability sample of 100 from the list of 10,000 employees, and the advantages and disadvantages for each design. (2 marks)