Question

Font Paragraph low would you use a completely randomized experiment in each of the following settings? Is a placebo being used or not? Be specific and give details. (c) A skin patch contains a new drug to help people quit smoking. A group of 75 cigarette smokers have volunteered as subjects to test the new skin patch. For one month, 40 of t volunteers receive skin patches with the new drug. The other volunteers receive skin patches with no drugs. At the end of the two months, each subject is surveyed regarding his or her current smoking habits. (Select all that apply.) he 1. Then record the smoking habits of all volunteers to see if a difference exists between the two groups 2. No placebo is being used. 3. Then record the smoking habits of the 40 volunteers to see if a difference exists between the two groups 4. Use random selection to pick 35 volunteers for the skin patch with the drug. 5. Then record the smoking habits of the 35 volunteers to see if a difference exists between the two groups 6. Use random selection to pick 40 volunteers for the skin patch with the drug 7. A placebo patch is used for the remining 35 volunteer in the second group Different Question Which technique for gathering data (observational study or experiment) do you think was used in the following studies? 1) An ecology class used binoculars to watch 23 turtles at Lowell Ponds. It was found that 18 were box turtles and 5 were snapping turtles. This is an observational study because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured his is an observational study because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured This is an experiment because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured This is an experiment because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured e 2

Answer 1

Uge--standorn selec Lion do pick yo volunteexsox the sin o a hus placebo path venainin se cond group volunte in the. The emunin v olunkeer Then record the smoki habits ot all volunteers to sce i'dileunce exists between the two ups