Answer:
They were essential to historical discoveries of that period. Due to the math developed while building the pyramids, we have the arithmetic knowledge we do today. The pyramids were an architectural marvel both then and now, and still affect architecture to this day.
Observational research is required to be conducted if someone wants to see whether, when seated next to their closest friends in the cafeteria, students were more likely to spill ketchup on themselves or not.
Moreo about Observational research:
In observational research, people and phenomena are observed in their most natural environments. Instead of using organised environments like study labs or focus groups, this allows researchers to observe how their participants make decisions and respond to circumstances in their everyday lives.
The study of non-experimental circumstances in which behaviour is observed and noted is referred to as observational research. The phrase "what really is going on or what's he doing" could also be used. The variables are neither controlled nor manipulated, hence the study is categorised as non-experimental.
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Answer: The correct answer is : The test decision is that Education levels and income are not related.
Explanation: It was concluded for this study that the educational level and income level are totally independent. The chi-square test is a statistical procedure used to test hypotheses about the difference between observed and expected frequencies in two or more nominal categories.
