Introduction to Probability and Statistics

QUESTION 1 a) A student intends to conduct a study to compare the Health Related Quality of Life between smokers and non-smokers. He decided to choose only students from Computer and Mathematical Sciences Faculty which contained three programs; statistics, mathematics and computer science as respondents. The total population of each program is as follow: Program Number of students Statistics 700 Mathematics 500 Computer Scince 400 A sample of 200 students are selected which consists at least one student from each faculty. i) State the population. (1 mark) ii) State the variable for this study. What type of variable is it? (2 marks) ifi) What is the best sampling technique to be using this study? (2 marks) b ) YANSOF Burger has a food stall in Buluh Kasap. The following table shows the number of orders per day for the last 50 days. Number of Number of orders days 5-10 2 10-15 15 15-20 10 20-25 13 25-30 7 30-35 3 Calculate median and standard deviation for the above data