10. A prerecorded video (Modules:Wk 9) explained a comic strip (https://xkcd.com/882/) about jelly beans and acne.

For 4 marks, , explain why we should not conclude that jelly beans cause acne, even though the null hypothesis was rejected for one color of jelly beans.

11. Canadian chocolate is not good. Because Mountie chocolate is Canadian, it's not good.

For 3 marks, rewrite the above as a syllogism in standard form, labelling the premises and conclusion.

12. A newspaper headline is: "Superdrinks that make you stronger".

The article underneath the headline lists a bunch of drinks.

For 3 marks, does the headline make a correlational or a causal claim? Explain why you think this.

13. What statistical technique was described in class as sometimes useful to separate out the effects of multiple measured variables? (2 marks)

14. Many headlines of articles about epidemiological studies, such as about nutrition, later are found to be false. Why is that? (2 marks)

15. A daycare assesses the amount of virus on employees' hands when they leave work with a chemical test. Unfortunately, a better assay found that the chemical test detected the virus in only half of the cases where the employee truly had virus on their hands.

For 3 marks, write sentence about what you know about the chemical test, in terms of "sensitivity" or "specificity".

16. The park does not have slugs when there's a blue-tongue living there, and the park did not have slugs last year. There must have been a blue-tongue living there.

16A. For 6 marks, write as a syllogism, with premises and a conclusion.

16B. For 3 marks, is the park argument suppositionally inescapable? Explain your answer.