B) Identify the sampling technique used for the following samples. (1 mark each) i) Questioning students as they leave the university library, a researcher asks 200 students
about their study habits.
ii) If a researcher selected five schools at random and then interviewed each of the teachers
in those five schools.

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319