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galben [10]
3 years ago
12

researcher recruits participants for an experiment by posting an announcement in the psychology department asking for volunteers

. What kind of sampling is being used?
Social Studies
1 answer:
Nadya [2.5K]3 years ago
3 0

Answer:

Simple Random Sampling

Explanation:

Sampling is the process of drawing a small group of representative people from population.

Random Sampling is when all the units of population have equal chance of being chosen as a sample.

Simple Random sampling is choosing a subset randomly from the entire set.

Researcher recruiting participants for experiment by posting announcement in psychology department, asking for volunteers. It is a simple random sampling as sample is randomly drawn by invitation to volunteer from the population of all people in psychological department.

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Under feudalism, lords were responsible for ruling different regions of a country.

These regions were given as a fief to the Lord by the King or a higher rank Lord in return for their loyalty and service.

Depending on the kingdom, this alliance between the King and his vassal could be inherited. If the king needed so, the Lord had to pay service of arms, gathering knights and soldiers for war. They also had to protect the land given and the people living in it for the King.

This was necessary for kings in Middle Ages because they didn’t have enough power and an army to protect their realms from invasions and raids. Lords were the ones who had private armies, so they could actually protect the country. This is why they became responsible for ruling different regions.

You can learn more about feudalism in the link below:

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Answer:

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