A large supermarket chain is considering extending their average daily shopping hours, so they decide to place an advertisement in the local newspaper asking people to submit the daily number of hours they prefer to have the supermarket open. After a week, the sample of 450 respondents had averaged opening times of 16 hours per day. Currently, the supermarket is opened for an average of 12 hours per day. Please answer each of the following, in the context of this question. a) Describe the "Who" and "What" of the data. b) What is the value of the statistic and what is the value of the parameter? c) For the sample gathered, what is the most obvious bias? Briefly explain