Answer:
The type of sampling used in Jankowski's study of gangs is Option D. Stratified sampling.
Explanation:
With stratified sampling, the researcher will partition the population into different groups, usually based on some characteristic that is common to that group. In this case, it was the different kinds of gang membership. Then, the researcher will take a sample of people within each specific group using another sampling method like simple random sampling for instance. The groups that are used in stratified sampling are called strata. Another example would be a national survey that is divided into strata of the different major ethnic groups that comprise the national population.
Answer: Experimental
Explanation:
Experimental study is the study in which researcher has some control over the variables where he can experiment and test over the groups. Observational study provides no control to researcher .He can only observe the process.
According to the question, study conducted by farmer is experimental as farmer has the control over quantity variable of land , grouping choice of crop etc.He is dividing the land equally in four parts,sowing same crops into 4 groups in each piece depicts that he is testing or experimenting everything equally.
An uncommon, unexpected, or an individual drug response thought to result from a genetic predisposition is called idiosyncratic reaction. These are also called type B reactions. They are side effects that happens rarely and mostly cannot be predicted. One example is an asthma attack due to the reaction to aspirin.
Answer:
The thick mud felt as if-<u>dirt got wet</u>
Creating a curfew for overcoming the increase in crimes committed by teens is a viable option but not for the long term. Avoiding teens to be on the streets at night could result in a temporary reduction on crime, but there are several crimes that could be committed hidden on houses or other abandoned places. A more plausible option would be to reinforce police surveillance and of course, creating jobs for teens to encourage them to be responsible and valuable for society.
