Part 1 - Identifying Risks and Hazards
Instructions
For this Assignment, review this week's Learning Resources. Open SPSS and then use the file/open/data command to open the dataset asbestos.sav. This is data collected on the incidence of lung cancer for those exposed to asbestos and those not exposed.
Run a chi-square for independence and odds ratio analysis as per this Week's demonstration video. Then, provide your response to all items in this worksheet.
Step 1: Set up your hypothesis and determine the level of significance
1. State the alternative/research hypothesis in written format.
2. State the null hypothesis in written format
3. What is your level of significance (choose α = .05 or α = .01)?
Step 2: Select the appropriate test statistic
4. What is the appropriate test statistic?
Step 3: Set up the decision rule
5. Based on the level of significance you set in step 1 and test statistic in step 4, what is your decision rule?
Step 4: Compute the test statistic
• Open SPSS and then use the file/open/data command to open the dataset asbestos.sav.
• Select: Analyze > Descriptive Statistics > Crosstabs
• Move asbestos to the Row(s) box, and lungca to the Column(s) box. Click on Statistics and make sure Chi-Square and RISK are checked. Click on Cells, and check Observed and Expected (frequencies). Click Continue; click OK.
6. What is the χ2 value computed by your SPSS analysis?
7. Paste your SPSS output here:
Step 5: Conclusion
8. Do you reject or fail to reject the null hypothesis?
9. Is there an association between asbestos exposure and lung cancer?
Part 2 - Identifying Risks and Hazards
Instructions
For this Assignment, review this week's Learning Resources. You will refer back to and use the SPSS output generated in this week's Assignment 1 for this assignment as well. This output is based on the asbestos.sav dataset that related to the incidence of lung cancer for those exposed to asbestos and those not exposed. Be sure to refer back to that output and then provide your response to all items in this worksheet.
Note: Scores are to be entered by instructor
1. From the SPSS output generated in this week's Assignment 1, copy only your odds ratio analysis ("Risk Estimate") portion of the output and paste.
2. The p-value associated with a chi-square test only suggests whether or not the results are statistically significant. Why is it important to also look at the odds ratio?
3. What does the odds ratio value in the SPSS output tell you, specifically, about lung cancer and exposure to asbestos?
4. Based on your answer above, would you say there is a strong association between asbestos exposure and lung cancer?
5. From the SPSS output generated in this week's Assignment 1, copy only your "asbestos * lung cancer Crosstabulation" portion of the output and paste
6. Using the formula provided in this week's Learning Resources, and the data in the cross-tabulation output, calculate the odds ratio and show your work in your answer.
Attachment:- ASSGN 1.rar