No it isn’t I hope it’s correct
Australia is the leading producer of bauxite
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.
Southern states threaten to nullify the tariff on imports enacted by Congress in 1828 because the tariff caused imports to cost more which hurt Southern states.
Answer: Option B
<u>Explanation:</u>
The tariff that the Congress enacted in the year 1828 on the imports from the English people in the United States caused the imports to cost more to improve the sale of the domestic products and reduce the imports from the European countries.
Since the manufacturers were mostly in the Northern part, the income from the tariff benefited those northern manufacturers only and it had an adverse affect on the Southern states.
