confused with entire problem

HW06-FSZT: Problem y Problem Value: 7 point(s). Problem Score: 0%. Attempts Remaining: 4 attempts. (7 points) Job destroyer? ~ The Wellcome Global Monitor is the world's largest study into how people around the world think and feel about science and major health challenges. The battle between man and machines goes back centuries. Are they taking our jobs? Or are they merely easing our workload? According to the article in The Guardian titled "Technology has created more jobs than it has destroyed, says 140 years of data", a study by economists at the consultancy firm Deloitte concluded that rather than destroying jobs, technology has been a "great job-creating machine". The article further states that machines will take on more repetitive and laborious tasks but seem no closer to eliminating the need for human labor than at any time in the last 150 years. One of the questions asked in the Wellcome Global Monitor 2018 study was: "Overall, do you think that science and technology will increase or decrease the number of jobs in your local area in the next five years?" Greta works as a science communicator and she wonders if people from different countries view the idea of science and technology destroying jobs differently and decides to use the results from the Wellcome survey to investigate. The table below summarizes observed data for Australia, Brazil, and China, consistent with the Wellcome Global Monitor 2018 study results. Respondent thinks the number of jobs Australia Brazil China Total will Increase 433 396 2405 3234 Decrease 395 419 434 1248 Total 828 815 2839 4482 Round all calculated answers to 4 decimal places where appropriate. Greta wants to conduct a hypothesis test using the hypotheses: Ho: There is no relationship between responses on the survey and country. Ha: There is a relationship between responses on the survey and country. 1. Which statistical test should Greta use? O A. t test for sample mean OB. X' test of independence O C. Z test for difference of two population proportions OD. x goodness of fit test O E. Z test for one population proportion 2. What conditions must be met for the hypothesis test to be valid? OA. Each observation must be independent of all other observations. OB. Population data must be nearly normal or the sample size must be at least 30.Ha: There is a relationship between responses on the survey and country. 1. Which statistical test should Greta use? O A. t test for sample mean OB. x2 test of independence O C. Z test for difference of two population proportions OD. X' goodness of fit test O E. Z test for one population proportion 2. What conditions must be met for the hypothesis test to be valid? QA. Each observation must be independent of all other observations. OB. Population data must be nearly normal or the sample size must be at least 30. O C. There must be an expected count of at least 5 for each cell in the table. OD. There must be at least 3 levels of the categorical variable. E. There must be at least 10 'success' and 10 'failure' observations. 3. What is the degrees of freedom for this test? df 4. Under the null hypothesis model, what is the expected count for people who think the number of jobs will "Decrease" in Australia? expected count = 5. Calculate the contribution to the test statistic for people who think the number of jobs will "Decrease" in Australia. contribution = 6. Calculate the test statistic for this procedure. ? VE Help Entering Answers Preview My Answers Submit Answers