6. The following table shows the responses from 200 customers that purchased large screen HDTVs. They were asked which type they bought and whether they were satisfied with it. Satisfied Not satisfied Faster refresh 64 16 Standard refresh 76 44 (a) What percentage of customers were satisfied with their purchase? (1 mark) (b) What proportion of customers bought HDTVs offering the faster refresh? (1 mark) (c) Are the type of model purchased and the satisfaction independent events? (2 marks) (d) How would this information affect your decision on which type of HDTV to buy? How confident would you be about this? - 13 marks)