1. Differentiate primary and secondary data collection methods (five points should be given) (5 marks)

2. Which sampling method is suitable to select 150 employees which fully reflects the distribution of these three departments in the population in order to collect primary data (assume that the researcher found sampling frames of all three departments)? (5 marks)

3. Why did you select the sampling method you have mentioned in above question? Justify your answer (10 marks)

4. Clearly explain how to select 150 employees with calculations using your procedure (10 marks)

part 2

A manager of a company randomly said that mean KPI value of their employees is 20 according to his knowledge. In order to check that value given by the manager (in order to check whether the mean KPI is significantly different from 20), an auditor has selected twenty employees randomly from the same organization and measured their KPI values using a standard scale which varies from 1 to 25.

20.70	27.46	22.15	19.85	21.29	24.75	20.75	22.91	25.34	20.33
21.54	21.08	22.14	19.56	21.10	18.04	24.12	19.95	19.72	18.28

Enter given data into SPSS accurately by defining variables. (03 marks)

Write down relevant hypothesis to test the above mentioned claim/value given by the manager (in order to check whether the mean KPI is significantly different from 20). (02 marks)

Test whether the mean KPI value of employees is significantly differ from 20 at 5% significance level. Write the interpretation (10 marks)