The results of a recent study showed that children who routinely drank reduced fat milk (1% or skim) were more likely to be overweight or obese at age 2 and age 4 compared to children who drank whole or 2% milk (scharf, demmer, and deboer, 2013). is this an example of an experimental or a nonexperimental study?

Answer

Experimental

Explanation

An experimental research is any conducted research with a scientific approach where a set of variables are kept constant while the other set   of variables are measured as the subject of the experiment.The study involves the random assignment of participant into different groups.

To be considered as an experimental study, it should give some sort of treatments to a group and recording the effects. (such as controlling type of mil children drink). Despite the uncertainty whether the result is accurate.

levels of production can be increased by technology while holding labor and capital constant, because increased technology makes the production process more efficient. subsequently, the lras curve is almost a vertical line, that can shift to the right, with an increase in technology.

the relationship between the lras curve and the ppc is that both can make the economy could grow. the ppc achieves that when it shifts outward because of more resources or technological advances while the lras curve shifts if more resources are developed or if there are technological advances.

the lras curve is a vertical line at an output level that represents the number of goods and services a nation can produce over a sustained period using all of its productive resources as efficiently as possible with all of the current technology available to it.

the production possibilities frontier (ppf) is a graphical device that is used for economic analysis of production decisions because the ppf measures the maximum possible combinations of two goods that an economy is capable of producing with its currently available resources and technology.