Answer:
A. Positively Correlated ; B. Negatively Correlated ; C. Uncorrelated
Explanation:
Correlation is the mutual / similar change direction relationship between 2 variables .
If 2 variables change in same direction (one increase - other increase , one decrease - other decrease) , they are positively correlated .
If 2 variables change in opposite direction (one increase - other decrease , one decrease - other increase) , they are negatively correlated .
A. More time spent studying implies higher test scores & less time spent studying implies lower test score . So , they are positively correlated .
B. Vaccination (being protection from illness) increase implies less illness , if decrease implies more illness . So , they are negatively correlated .
C. Soft Drink & Music seem to have no logical mutual movement connectivity . So , they are Not Correlated / Uncorrelated .
Answer:
correct option is d. rental costs of $10,000 per month plus $0.30 per machine hour of use
Explanation:
solution
The combined cost is one in which the factor is variable and constant.
Sometimes, even the total cost is difficult to separate.
The chosen option also includes a fixed cost that costs $ 5,000 per month.
The cost per hour of the machine increases 0.30 per hour.
This is variable because the entire machine depends on the number of hours used.
The other three are completely variable, such as salary, and are not deductible or cost of electricity.
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Answer: Federal Reserve Board
Explanation:
The Federal Reserve Board represents the leadership of the Federal reserve system or the Fed, America's central bank.
Decisions that have to do with the eligibility of an over-the-counter stock for purchase on margin falls under Federal purview and is regulated by the Federal Reserve Board and enforced by the Financial Industry Regulatory Authority.
Your answer is D - petroleum.
the area around the Persian Gulf is desert so can't be the water, coal or cattle. But here it can be found large underground reserves of Petroleum.
