Work to win votes for their candidates .
<u>Question 1</u>
The correct answer is: "The researchers administered a questionnaire to obtain their data without trying to influence an explanatory variable of the study".
An observational study is one in which the researcher observes the effect of a variable without manipulating the conditions that surround the exposure or the subjects who are exposed to it. In this example, he simply hands out questionaires to the 353 individuals that compose the sample drawn from the population of interest: 12-year old teenagers.
<u>Question 2</u>
The correct answer is: "a cohort study".
The researcher is interested on a population group where all the components share a common characteristic (12-year old) and therefore they all belong to the same cohort. Subsequenly, he evaluates the differences between the ones who have been exposed to the explanatory variable (having a video console in the bedroom) and those who have not.
Answer:
Symptoms of excessive stress include all of the following EXCEPT C. increased energy level.
Explanation:
As a matter of fact, stress has the opposite effect. Low energy levels and fatigue are associated with prolonged stress. One of the reasons is the fact that stress leads to disruption in one's sleep, causing insomnia, which in its turn causes a decrease in energy levels. It has been found that increased levels of stress are associated with fatigue in a study of over 2,000 people.
Conception occurs when sperm penetrates an egg. About three days after conception, the fertilized egg is divided into multiple cells, and attaches to the uterine wall. Here, the cell will grow into a full baby. The newborn infant has certain abilities, such as being able to grasp, flex his toes and forefoot and sucking. This development capabilities are controlled by nature, not nurture.
Answer:
When discussing investments, “risk” is the possibility of little or no return
Low risks typically have high returns.
The higher an investment’s risk, the greater its potential return will be.
Explanation:
Risk is a situation that involves an exposure to dangerous outcomes. This risk can be from very little extent to a huge extent, depending upon how you take it and in what circumstances you decide to play.
In the above question, in business terms, risk is necessary in order to achieve profits. The statements
When discussing investments, “risk” is the possibility of little or no return
Low risks typically have high returns.
The higher an investment’s risk, the greater its potential return will be,
are correct.
