Answer:
1. cluster samples rely on clusters of participants;
multistage samples collect data from participants at different stage
Explanation:
Under clusters sampling, sampling plan involves the division of total population into groups (known as clusters) where simple random sample of the groups is selected; elements in each cluster are then sampled.
Multistage sample involve sampling in stages which becomes smaller in each stage. It could be a complex form of cluster sampling.
This agency was called The United States Office of War Information
It was created in June 1942 and it was providing information about the war, including propaganda, until 1945. This office also provided propaganda abroad, to weaken the support for the Nazi Party.
The answer to this question is: Rotation challenges
Studies show that When an employee has been handling a certain job for a prolonged period of time, the employee will develop a certain way of thinking that make it easier for that employee to be effective in that certain job while reducing the employee's capability in doing another type of job.
The correct answer is letter A
Explanation: <u>Attrition</u> is a reduction in the number of research participants as some drop out of the study over time.