11) The recursive formula to = 2ta-1 - In# defines a sequence of numbers. Find the next three terms in the sequence given that the initial values are t = 2 and u = 4. (3 marks) 12) A magazine company is conducting a survey for 5000 customers. The company will only sample 100 customers. What is the sampling interval for this situation? (2 marks) Scanned with CamScanner 13) For the following set of data: 13 3 3 4 5 5 6 7 8 9 10 Calculate the: 1) mean (1 mark) b) median (1 mark) c) mode (I mark) d) standard deviation (2 marks)