Answer:
That's the answer to your recent most question!
- negative base raised to an even power = positive base raised to the same power.
- negative base raised to an odd power = negative base raided to the same power.
- base raised to negative power = 1/ base raised to positive power.
An agrarian society is a society whose economy and wealth is primarily based upon agriculture. Agricultural production relies primarily upon human and animal labor as opposed to mechanized tools. For example, a farmer in an agrarian society is likely to plow a field with a plough powered by horse, oxen or even just himself. An industrial society would utilize a tractor to till the field.
Federalism is a way of organizing a nation so that- two or more levels of government have formal authority over the same area and people. Federal systems are more decentralized than unitary systems but less so than confederations.
Answer:
d)
Explanation:
A simple random sample is a subset of a statistical population in which each member of the subset has an equal probability of being chosen. It also has the characteristic that a simple random sample is meant to be an unbiased representation of a group.
In a simple random sample, the sample is always smaller than the population (since it's a subset of it).
There are also two kinds of random sample, one with replacement (in which the same element is put back into the population and it can be taken for the sample again, thus is being selected more than once) and one without replacement (in which every element can only be selected once).
There is no really a standard size for each sample as long as it is smaller than the population, however, smaller samples can tend to reduce reliability and therefore can bias our experiment so they are not recommend. Also the idea of the sample is that we can generalize our observations into the general population and this can happen with larger samples.
Thus, the characteristics that apply to random sampling are:
d) All observations in the population are equally likely to be selected into the sample.
