For each question, either choose the most correct option, or type in the answer to the number of decimal places specified. 1. {1 mark) What proportion of the participants in the study did not change their level of physical activity? (3dp) 2. {1 mark] What proportion of the 4049 participants did more physical activity than before? [3dp] 3.1[1 mark) What proportion of the participants did less physical activity were 1829 participants? [3dp) The researcher would like to answer the following research question: "Do Australians in different age groups change differently in their physical activity during the COVID-19 lockdown?" S/he sets up the following null and alternative hypotheses to answer the research question. Hg :"here is no association between age groups and change in physical activity. H1 :"here is an association between age groups and change in physical activity. 4. {1 mark] What is the expected value for 1829 participants who did more physical activity than before? [3dp} 5. {4 marks} The absolute value of the test statistic is equal to (type your answer with 3 dp) 6. {1 mark] "he degrees of freedom is equal to (type your answer as an integer] 7.1[1 mark) "he pvalue is smaller than 0.05 v 0 8. {1 mark) We decide that A v 9. {2 mark] Our conclusion is that 10. {4 marks} We are 95% confident that among the participants who come from 4049 age group. the proportion who had no change in their physical activity is between {lower limit} and [upper limit). Type your answers with 3dp. A researcher is concerned about Australians' physical activity during the lockdovvn. S/he wants to understand whether change in amount of physical activity during the COVID-lg lockdovvn depends on people's age. The following table shows a random sample of Australians in different age groups and their change in amount of physical activity (n: 158). Use the table to ansvver the questions which follow Change in amount of physical activity during the COVlD-19 lockclown by age group Age More than No Less than group before change before 18-29 19 32 30 40-49 20 33 34