Page 1: 1 2 3 4 5 6 7 8 9 Survey Sampling The Department of Education is interested in the opinion of Irish adults about third level fees. They contract a survey company who use random digit dialling over the period Wednesday 4th April 9am to Friday 6th April 8pm. They made 5,000 calls, resulting in 233 survey responses. Each survey respondent was asked the question 'Do you believe Third-level fees should be abolished?: 60% of respondents said yes, 13% of respondents said no, whilst 27% of respondents were unsure. Answer the following questions about this survey Question 1 (2 points) What is the population in this study? A single sentence answer is sufficient. 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Question 2 (2 points) To the nearest integer, how many of the respondents were unsure about the statement? Give your answer as a whole number with no other text. MacBook Dre Page 1: 1 2 3 uestion 3 (2 points) Calculate the conservative margin-of-error for this survey. Give your answer as a percentage correct to 1 decimal place 4 5 6 7 op 9 10 11 12 Question 4 (4 points) The Department is interested in how the answers might vary by county, Explain briefly (two or three sentences) how stratified sampling might be used to ensure more efficient collection of data, 13 14 15 16 17 18 19 20 21 --- 22 23 24 Mac Pre