A physician is interested to study the relationship between age and cholesterol levels of adult men. A random sample of 25 adult males was selected from a total of 75 adult males from Clinic Penawar and their blood sample was taken to analyze their cholesterol levels. a) State the population and sample of the study. b) State the sampling unit for this survey. (2 marks) (1 mark) c) Determine the variable of interest in this research and state the type of variable. (2 marks) d) Suggest the best sampling technique that can be used in this study. Hence, show the procedure in selecting the sampling using the chosen sampling technique.
