Answer:
Arithmetic = 3%
Geometric = 2.37%
Explanation:
The arithmetic average of 'n' returns is given by:

For five returns of 5% ,21%, -12%, 7%, and -6%:

The geometric average of 'n' returns is given by:
![G=\sqrt[n]{(1+r_1)*(1+r_2)*...*(1+r_n)}-1](https://tex.z-dn.net/?f=G%3D%5Csqrt%5Bn%5D%7B%281%2Br_1%29%2A%281%2Br_2%29%2A...%2A%281%2Br_n%29%7D-1)
For five returns of 5% ,21%, -12%, 7%, and -6%:
![G=\sqrt[5]{(1+0.05)*(1+0.21)*(1-0.12)*(1+0.07)*(1-0.06)}-1\\G=0.0237=2.37\%](https://tex.z-dn.net/?f=G%3D%5Csqrt%5B5%5D%7B%281%2B0.05%29%2A%281%2B0.21%29%2A%281-0.12%29%2A%281%2B0.07%29%2A%281-0.06%29%7D-1%5C%5CG%3D0.0237%3D2.37%5C%25)
 
        
             
        
        
        
Answer:
a) Bond rating is done by evaluating and considering all the relevant internal as well as external factors associated with the financial status of a business.
b) Bond rating helps in analysing the risk associated with the bond by analyzing its credit quality and thus helps investors taking decisions related to their investments. 
Explanation:
a) Bond-rating is the letter grading system that is used to indicate the quality of the credit-related to the bond of various organizations. Bond-rating is done by evaluating and considering all the relevant internal as well as external factors associated with the financial status of a business. Internal factors may include the financial strength of the organization. External factors may include various networks with interested investors and other government organizations and policies related to the same.
There are three important agencies that analyze the credit quality of a bond. These agencies are Standard & Poor's, Moody's, and Fitch rating Inc.
b) Bond-rating help in analyzing the risk associated with the bond by analyzing its credit quality and thus helps investors taking decisions related to their investments. It helps the investors to study the stability and quality of a bond. Hence, higher-rated bonds are considered to be more stable and appropriate for investment purposes.
 
        
             
        
        
        
Answer:
Mary should answer that more than half of the boxes not be rejected.
Explanation:
Probability:
Box has one defective screen = 0.6
Box has three defective screen = 0.4
no. of screens in a box = 8
The box is rejected if both of the inspected screens are defective.
Probability of rejecting a box:

= 0.04286
Only 4.286% of the boxes will be rejected. 
Therefore, Mary should answer that more than half of the boxes not be rejected.
 
        
             
        
        
        
If real GDP is $200 billion, full employment GDP is $400 billion, and the marginal propensity to consume is 0.75, then Congress should-----
increase government purchases by spending by $50 billion.
What is marginal propensity?
In economics, the marginal propensity to consume (MPC) is defined as the proportion of an aggregate raise in pay that a consumer spends on the consumption of goods and services, as opposed to saving it.
Full employment:
 is an economic situation in which all available labor resources are being used in the most efficient way possible. Full employment embodies the highest amount of skilled and unskilled labor that can be employed within an economy at any given time.
Learn more about real GDP:
brainly.com/question/24156212
#SPJ4
 
        
             
        
        
        
Answer:
Thus, the present value is $2045.52.
Explanation:
Use the below formula to find the present value:
Present value = FV ÷ (1 + r/4)^(n*4)
Present value : 

Thus, the present value is $2045.52.