Munira would like to investigate the contributing factors towards low male students' enrolment at higher learning institutions in Malaysia. From her literature search, she found out that male students are more involved with unhealthy activities, for example, illegal motor-racing and vandalism which led to low enrolment of male students. Briefly explain the relevant type of research and provide ONE (1) null hypothesis of the above study. (3 Marks) QUESTION a) Ranking scales are commonly used to tap preferences between two or more among objects or items (ordinal in nature). Briefly describe the difference between forced choice and paired comparison scale. (3 Marks) b) Briefly describe validity and reliability procedures which have been taken in completing your group research project. (3 Marks) (Total: 6 Marks) QUESTION a) Briefly explain ONE (1) type of probability sampling technique and explain the procedures taken to conduct it. (3 Marks) b) Identify the difference between convenience and purposive sampling. (3 Marks) (Total: 6 Marks) QUESTION a) Briefly explain another way of collecting data other than a questionnaire. Provide an example of the study which is related to the method of data collection mentioned. (3 Marks) b) Describe the term an unobtrusive observation and provide an appropriate example of the study. (3 Marks) (Total: 6 Marks) QUESTION a) Answers in a questionnaire may be left blank due to several possible reasons. Describe TWO (2) procedures to be taken by a researcher in handling blank responses during the process of pre-data analysis. (3 Marks) b) Briefly explain an activity involved in data editing and provide a relevant example. (Total: (2 Marks)