A researcher recruits participants for an experiment by posting an announcement in the psychology department asking for volunteers. What kind of sampling is being used

The correct answer is non-probability

Non-probabilistic sampling, this type of sampling is used when we do not have access to the complete list of individuals that make up the population (sample frame), so we do not know the probability that each individual will be selected for the sample. The main consequence of this lack of information is that we cannot generalize results with statistical precision.

abu bakr, was a senior companion and—through his daughter aisha—a father-in-law of the islamic prophet muhammad. abu bakr became the first openly declared muslim outside muhammad's family. abu bakr served as a trusted advisor to muhammad.

the anti federalists was a movement that was opposed to the creation of a us federal government. although they were not as organized as the federalists, they also had a large group of leaders, especially in state politics.

the statement "now, in a large extended country, it is impossible to have a representation, possessing the sentiments, and of integrity, to declare the minds of the people” represents the concerns of the anti federalists.

they strongly believed that the federalists were representing the interests of aristocratic elements of society at the expense of the majority of ordinary people, who lived in a rural society.

their fear for the creation of a strong federal government and the president’s power of veto in their opinion would create a tyrannical rule that would dominate the people. they defended the importance of restraining the government’s power towards people at any cost.