13) To determine the percentage of school-age children who will join school this year. 300 households were selected at random in a small town revealed that 20% had children in school age. Answer the following: 1. What is the population of interest? (a) All children the town (b) All households in the town (c) All children in households. (d) None of the above 2. What is the sample? (a) The 300 students selected at random. (b) The 300 children selected at random. (c) The 300 households selected at random. (d) None of the above. 3. What is the parameter of interest? (a) Percentage of school age children in the sample (b) Percentage of households in the town (c) Percentage of school age children in the town (d) None of the above 4. How many students in the sample were found to in school-age? (a) 30 (b) 300 (C) 60 (d) none of the above