Answer:
C. a third variable, such as students' home environment, must have caused students to both drink more non-diet soda and engage in aggressive acts
Explanation:
From the question, we are informed about An observational study that was conducted in inner-city Boston approximately four years ago demonstrated that high-school students who consumed more than five cans of non-diet soda every week were between 9 and 15-percent likelier to engage in an aggressive act compared with counterparts who drank less non- diet soda. In this case, we can reliably conclude that a third variable, such as students' home environment, must have caused students to both drink more non-diet soda and engage in aggressive acts.
Observational studies can be regarded as studies whereby
researchers make observation about different effect of factors such as
risk factor, home, as well as environment and diagnostic test that affects the experiment. In observational studies Variables are very crucial, A variable can be anything that that is liable to change, it can change and it can be changed as well. They are factors which the observer can manipulate or control for when carrying out experiments.
Answer:
The longest filibuster.
Explanation:
A filibuster is a political tactic where one or more members of the parliament discuss the matter of debate for a long time, to delay the final decision.
Senator Strom Thurmond holds the record, however, this tactic has been widely used in the past, as far as the roman empire. When the roman senator Cato the Younger was opposed to any legislation he would often delay the measures, by pronouncing a speech that lasted until nightfall.
As an interesting fact, despite senator Thurmond's fierce opposition, The Civil Rights Act of 1957 was still passed by the US Congress and was signed by President Dwight D. Eisenhower.
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