Evidence Claims And Study Types Math225n Study Guide Rated A+

A researcher is interested in seeing if there is a relationship between the use of a particular software program and the age of the user. The researcher conducts a survey of adults in which she categorizes the respondents into one of two categories, either 18−35years old, or 35 years and older. {Ans: The study is an observational study.}Is a survey of the guests about their preference of food at a party an observational study or experimental study? If it is an experiment, what is the controlled factor? {Ans: The study is an observational study.}In the description of the following experiment, determine the experimental factor. A research team is testing a paste form of a drug to alleviate inflammation. Participants are grouped into Team A and Team B. Team A receives the paste form of the drug. Team B receives a similar paste with no active ingredients. {Ans: the kind of paste received}A researcher wants to evaluate the effect of using Facebook on happiness. Would an experimental or observational study design be more appropriate? {Ans: An experimental study should be used with the use of Facebook as the controlled factor.}A biology student is interested in the relationship