estion 4 A researcher divides people into two groups to study the effects alcoho
ID: 270509 • Letter: E
Question
estion 4 A researcher divides people into two groups to study the effects alcohol has on the likelihood people will talk to strangers. One group receives fruit punch that contains no alcohol while the other receives fruit punch that does contain alcohol. People are not told if the punch they consumed contained alcohol. The researcher observes that people who consumed alcohol started conversations with strangers more frequently than people who did not. What conclusion can the researcher draw from this observation? t yet swered ints out of 0 Flag stion Select one: a·Alcohol consumption is correlated with people talking to strangers more frequently b. Alcohol consumption causes people to talk to strangers more frequently. stion 5 yet vered s out of A researcher wants to know if oxytocin has an effect on sexual arousal. She injects 30 people in the arm with oxytocin that is dissolved in saline. What would be the best control group for this study? Select one: lag tion a. People who received a pill containing oxytocin b. People who received a placebo pill C. People who received an injection of saline d. People who received no treatment of any kind.Explanation / Answer
Please find the answers below:
Answer 1: Choice B (accordingly, the observation of people talking more frequently to strangers arises due to consumption of alcohol as an effect of alcohol, hence, statement 2 is appropriate. However, correlation can be found only after a statistical test)
Answer 2: Choice C (The vehicle solvent used for administration of the molecule of interest serves as the negative control in an experiment, hence normal saline)
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