schools. Propose ONE possible hypothesis of your study and identify the independent variable (IV) and dependent variable (DV) of your hypothesis (5 marks). Then identify the levels of measurement of each of the variables in the following questions used in the survey of this study (5 marks): (i) What is your family income? O less than $12,000 O $12001 - $22000 0 $22001 - $32000 O $32001 - $42000 O $42001 or above (ii Which type of housing are you living in? O Subsidized public housing O Private housing O Sub-divided flat (ifi) Please rate the following statement "I feel that life is very rewarding". [1 = strongly disagree; 5 = strongly agree] Strong Disagree Strongly Agree 01 02 0 3 04 05 (iv) How often do you feel pressured to study? (Please state the number of days in the past three months) (v) Please rate the following statement: "I am well satisfied about everything I have now." [1 = strongly disagree; 5 = strongly agree] Strong Disagree Strongly Agree 01 02 03 04 05QUESTION 1 (30 MARKS) Imagine you are a research officer working for a research company in Hong Kong In 2020, the United Nations released the 2020 Global Happiness Report, investigating the level of happiness in 153 countries or regions. Finland has been rated as the happiest in the world for three consecutive years; Hong Kong has dropped two places from last year, ranking 78th. Hong Kong's happiness index does not advance or declines. Hong Kong continues to decline in the global ranking, the highest ranking is 64, but last year it dropped to 78. In addition, studies have shown that the index is even more pronounced in the adolescents. Facing this issue, Hong Kong Education Bureau invites your company to conduct a survey to investigate secondary school students' level of happiness in Kowloon Tong district. A random sample of 500 students will be selected from three different categories of secondary schools (government and aided, direct subside, and private) from total 7000 population. The number of each category is as follows: Category of secondary Government and Direct subside Private schools Aided Number of students 5950 910 140 (a) Before you conduct the study, you need to take note on the ethical consideration of data handlings. Identify and explain any TWO essential ethical principles in data handling that should be implemented in this study (6 marks). (b) Your supervisor suggests that the full household telephone list of Kowloon Tong district can be used as the sampling frame. Do you agree? Explain the two possible limitations of using full household telephone list as the sampling frame of this study (4 marks). Then use stratified random sampling (sample size = 500) to illustrate how the sample are selected from the 3 categories of secondary schools. In your illustration, you need to show the followings: (i) Find the number of individuals to be selected from each category of secondary schools [please show your steps of calculation] (3 marks). (ii) What serial numbers would you assign to the individuals in a category? Take the category of government and aided as an example to illustrate (you should provide the range of the serial numbers used for the category) (2 marks). (ifi) if systematic random sampling is used to select samples from the list of individuals in the category of government and aided, find the sampling interval (k) [please show your steps of calculation] (2 marks). (iv) Use the first row of the random number table provided on page 2 of this question paper and the sampling interval (k) calculated to list the first 3 serial numbers for the selection of individuals in the category government and aided (3 marks). (c) Suppose you would like to compare the perception to happiness between students from government and aided secondary schools and students from direct subside and private secondary Section 53 Page | 3