ENH 522 Lecture Notes - Lecture 2: Null Hypothesis, Listeriosis, Probiotic

• School: Ryerson University
• Department: Environmental Health
• Course: ENH 522
• Professor: Anne Harris

Document Summary

Terminology review, reading scientific articles, designing experiments, experiment activity. Which of the following would best be categorized as an exposure variable for the study by. Schuchat et al: dietary counselling, listeriosis, consumption of soft cheeses, organ transplant, immunosuppression. Consumption of soft cheese was looked it, they believe it was the cause of listeriosis. Where as listeriosis would be the outcome of that exposure. Look at the title (cid:862)laptop (cid:373)ultitaski(cid:374)g hi(cid:374)ders (cid:272)lassroo(cid:373) lear(cid:374)i(cid:374)g or (cid:271)oth users a(cid:374)d (cid:374)ear(cid:271)(cid:455) peers(cid:863) The (cid:449)ord (cid:862)hi(cid:374)ders(cid:863), (cid:862)effe(cid:272)ts(cid:863), a(cid:374)d (cid:862)(cid:272)ha(cid:374)ges(cid:863) assu(cid:373)e a (cid:272)ausal relatio(cid:374)ship. Rephrase our research question with no relationship, the null hypothesis. The key thing is restating the research question as no relationship. Identify the explanatory and response variables and the null hypothesis, Does a restaurant inspection system prevent foodborne infection: explanatory: inspection, response: foodborne infection, null hypothesis: there is no association between inspection system and foodborne infection, causal word: prevent.