The Australian Bureau of Statistics released the first issue of the Household Impacts of COVID-19 Survey in
April 2020. Below are three of the questions that were included in the survey:
1. What is the person’s age in years?
2. Has the person’s work hours reduced due to COVID-19?
3. Has the person had a flu vaccination this year?
For a randomly selected individual, let X denote the response to Question 1, Y denote the response to Question
2 and Z denote the response to Question 3. Consider the below statements, each identified by a letter (i.e.
‘A’, ‘B’ etc.) To successfully answer this question, provide the letter(s) identifying ALL correct statements.
You will get zero marks for this question if you (i) do not identify all of the correct statements or (ii) include a
statement that is incorrect.