Six months after a devastating earthquake, a researcher goes back and examines archival data (sales records, etc.) that indicate how prepared residents in the area were for a disaster before the earthquake hit unexpectedly. The researcher then gathers data on how prepared residents are for a disaster six months later and compares the scores. This study is an example of a(n) .

This study is an example of an interrupted time series analysis.

Explanation:

A quasi-experiment is a type of research that does not use random variables and whose purpose is to establish a relationship of cause and effect. Regarded as the strongest quasi-experiment design, an interrupted time series analysis occurs when data is collected at regular intervals during a period of time. In the example given in the question, the researcher collects data, waits six months, then collects data again with the purpose of comparing the scores.

the answer is: c. c.it limited the president’s power to start wars.

the war powers resolution of 1973 requires the president to notify the congress whenever the president wanted to order a military operation to other countries within 48 hours. if after being reviewed the congress disagree with the proposal, that the president will be banned from ordering the operation.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.