The number of people who selected Self Investment Choice (SIC) for employee superannuatec during the last year obtained from a random sample of eight universities shows the following: 2, 0, 4, 7, 2, 5, 4, 8. 1. What is the sample mean? A 3 B 2 C 5 D 4 2. What is the median? A 3 B 2 C 5 D 4 3. What is the sample standard deviation? A 6.25 B 7.14 C 2.50 D 2.67 4. What is the range? A 8 B 6 C 5 D 4 Question 5 - 8 (1 mark each = 4 marks) 5 8 A survey is conducted to determine whether industry type is independent of geographic location. The result of the survey is tabulated for the following fast growing industries (Retail and Education) and their respective locations, Queensland (QLD) and Tasmania (TAS) Geographic Locations Industry type QLD AS Total Retail 15 28 43 Education 25 32 57 Total 40 60 100 One industry is selected at random. Let A be the event that the industry is located in Queensland, and let B be the event that the industry type is 'Retail'. 5. What is P(A)? A 0.40 B 0.25 C 0.15 D 0.20 6. What is P(A n B')? A 0.40 B 0.25 C 0.15 D 0.20 7. What is P(A' U B)? A 0.68 B 0.75 C 0.85 D 0.25 8. What is P(A | B)? A 0.125 B 0.349 C 0.905 D 0.375