Answer:
a. Increased consumption , which shifts the aggregate-demand curve right.
Explanation:
When there is a boom in stockmarket which makes people wealthier, people's consumption would increase because of the desire and availability of money to purchase goods, which results in demand curve shifting right.
The boom in the stockmarket means people investment has appreciated hence are able to save and increase their consumption spending.
A shift in demand curve to the right means an increase in the quantity demand of goods and services while a shift in demand curve left means a decrease in the quantity demand of goods and services.
Other factor that could cause increased consumption and shifts in aggregate demand curve right is tax decrease. Tax is a compulsory levy imposed on an individual or an organization by the government.
When there is a tax decrease, people would be able to save more thus increase their desire to consume more hence demand curve would shift to the right.
Answer:
b. The pairs in which neither individual is given extra juvenile hormone is the control
Explanation:
This is an experiment in which the researcher wants to establish a relation between the aggresion in wasp with the juvenile hormone, but to know which are really the effects you need something to compare with, that is called the control group, that is usually in the normal conditions, in this case it corresponds to the pairs in which they don't give the extra juvenile hormone, so the researcher can compare the difference between this pair with the pair in which one of the individuals has extra juvenile hormone.
That is true, if you raise the rate then the present value falls.Of course, the present value will fall assuming the existence of positive cash flows. This annuity present value is divided into four pieces which are: the present value (PV), the periodic cash flow (C), the discount rate (r), and the number of payments, or the life of the annuity, (T).
