QUESTION 3 A researcher conducted a study in determining the level of satisfaction on the welfare services provided by the employer in the banking sector. This study involved a total of 300 employees taken from five randomly selected banks from a total of 10 banks in Town A. All the employees from the selected banks were asked to answer the questionnaires. Among the questions asked were gender, length of service (years), type of welfare facilities and satisfaction towards welfare services provided by the employer (1=Good, 2=Average and 3=Poor). a) State the population and sampling frame for the above study. (2 marks) b) Name any TWO (2) variables from the study. Hence, state its type of variable. (2 marks) c) Name the sampling technique employed in the study. (1 mark)d) Suggest the data collection method that suitable to the study. Give ONE (1) advantage of the method used. (2 marks)QUESTION 4 The owner of rental houses claims that the average length of occupancy is 3.2 years. A random sample of 35 rental contracts were selected and analysed using SPSS. One-Sample Statistics N Mean Std. Deviation Sid. Error Mean Length (years) 35 3.446 1.0551 T a) Show that T is 0.1783. (2 marks) b) Construct a 95% confidence interval for the average length of occupancy of properties owned by the owner. (3 marks) c) Based on the confidence interval in b), is the owner's claim true? Give a reason to support your answer. (2 marks)