D. To research its historical background and original purpose
This gives you the information and reason behind the work and explains where it comes from
Answer:
I believe B, Herding and farming.
Supercentenarians people are people who live a 100 years and older. Generally worldwide the life expectation is less than 100 years and thus this people are referred to as supercentenarians since they live etreme longer. According to reaserch conducted in us in 2012 thy were allowed 316300 living centenarians world wide.
The fourth question is correct (D).
To understand this answer, one must understand the mechanism of correction of inflationary processes.
Inflation erodes the purchasing power, thus, the elderly with fixed income will be harmed and not beneficiaries in an inflationary process.
<u>The main mechanism to reduce inflation is the interest rate.</u> In this way, when inflation happens, the Federal Reserve raises the interest rate. This makes public bonds profitable and economic agents begin to use money by buying bonds, reducing the circulation of money and consequently lowering inflation.
For banks that have made adjustable rate loans, this will be a good thing, as interest on the contracts will increase along with the increase in the interest rate, which will make the contracts yield more. Therefore, banks will be the biggest beneficiaries. However, this will happen only when the rate is adjustable.
Answer:
a) 99.7%
b) 68%
Explanation:
= Mean = 168 cm
= Standard deviation = 6 cm
a. 150 cm and 186 cm


They vary by 3 standard deviations. So, 99.7% of men are between 150 and 186 cm
b. 162 cm and 174 cm


They vary by 1 standard deviations. So, 68% of men are between 162 and 174 cm