QUESTION 2 A video store sells 3 different brands of DVDs. Of its DVDs sales, 45% are brand A 30% are brand B and 25% are brand C. It is known that 25% of brand A DVDs needs repair while under warranty, whereas the corresponding percentages for brands B and C are 20% and 15% respectively. b) c) d) Find the probability that a randomly selected purchaser has brought a brand A that will need repair while under warranty. (2 marks) Find the probability that a randomly selected purchaser has a D.D that will need repair under warranty. (4 marks) If it is known that a DVD does not need repair while under warranty period, what is the probability that it is of brand C? (4 marks)