In 1982, 490,000 subjects were asked about their drinking habits. Researchers tr
ID: 3177417 • Letter: I
Question
In 1982, 490,000 subjects were asked about their drinking habits. Researchers tracked subjects' death rates until 1991, and found that adults who regularly had one drink daily had a lower death rate than those who did not drink Most of the subjects were middle-class, married, and college-educated. Refer to insert three. The alcohol study was an example of: An observational study. A randomized experiment. A controlled experiment. An observational study with a control group. Refer to insert three. From the alcohol study we: can a. confidently conclude that consuming a low quantity of alcohol regularly, has beneficial health effects, primarily because sample size which the conclusions were formed. can conclude that consuming a low quantity of alcohol regularly, has beneficial health effects, primarily because the researchers made attempts to control for other variables by restricting the study to middle-class, married and college subjects. Both A and B. None of the above.Explanation / Answer
14) Answer is c) The alcohol study is an example of controlled experiment as
A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a few) factors are changed at a time, while all others are kept constant. Here the factor is 1 alcoholic drink.
The experiment group are the one receiving 1 alcoholic drink and the Control group are the one who did not drink.
15 ) answer B