QUESTION 6 A retail store did a survey of its customers and found that 30% of the customers were unhappy with the service received. Of those who were unhappy with the service, 74% said that they would not shop at that store again. Of those who were happy with the service, only 5% said that they would not shop at the sore again. 6.1. Draw a tree diagram to represent the results of this survey, clearly indicating the probability of each overall outcome correct to THREE decimal places. (5) Determine the probability that a customer selected at random says that he/she will shop at the store again, 6.2. (2) [7]​