<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,:Difficulty in ascertaining the techniques to be used when dealing with much population.
Waste of time .
Ommission of key samples.
Delayed report.
Explanation:
Answer:
rudolf the red nose reindeer and Comet
Answer:
<u>integrity</u>
Explanation:
Professional characteristics are the qualities which specifically represent the level of commitment or performance of an individual towards his job. Some of such qualities include honesty, ethics, integrity, confidence, and responsibility. These qualities define a person and reflect his competency in a particular position. In the above case, the professional characteristic of phlebotomist reflects her integrity towards her job.
