2 months. She already has $100 saved which means she needs $400 more. Each month, she spends $1000 out of $1200 which means she has $200 left each month. $200 for 2 months will give her the $400 she needs.
Answer:
<u>b. no, this does not need to be reported since it is unrelated to participation in the study.</u>
Explanation:
The research in conducting a focus group to learn about hygiene and disease prevention but the subject having a heart attack does't count as part of the research.
Answer:
An observational study of an association between two variables.
Explanation:
In the given scenario, it is an observational study of an association between two variables. The variables being :
- Explanatory variable (independant variable / predictor variable) may explain or influence changes in a response variable.
- Response variable (dependant variable) measures an outcome of a study.
Observational study observes individuals and records variables but doesn't attempt to influence the response (does not impose a treatment). It allows the researcher to directly observed the behavior of inteest rather than rely on the subject's self-descriptions (Survey) thus allowing the researcher to study the subject in its natural environment, thus removing the potentiallybased effect of the unnatural laboratory setting on the subject's performance.
Answer:
It can be inferred that Mark lives alone and could be financially unstable.
Explanation:
There can be several factors regarding such practice of Mark. Since he buys from a nearby store that has limited variety of products and canned food it can be assumed that Mark lives alone and there are not much residents to demand for change in purchasing of food items. Mark might also be financially unstable to travel to some other store variety products are available and are expensive for him to buy.
Moreover, it's also a possibility that Mark prefers canned food over fresh food.
