Suppose you held a well-diversified portfolio with a very large number of securities, and that the single index model holds. If the σ of your portfolio was 0.18 and σM was 0.22, the β of the portfolio would be approximately: a. 0.74.
b. 0.80.
c. 1.25.
d. 1.56.

B. 0.80

Explanation:

A well diversified portfolio can be regarded as one which has different securities with their weight been small. Since the single index holds,

The single-index model (SIM) by William Sharpe, is a model that that provides the risk as well as the returns of stock.

Given:

the σ of your portfolio = 0.18

σM = 0.22,

the β of the portfolio= the σ of your portfolio/σM

the β of the portfolio==0.18/0.22

= 0.82

Therefore, the β of the portfolio would be approximately 0.80

answerangel investor;

among other factors, composers started writing dynamic markings in their scores because "new instruments allowed for more dynamic ranges and contrast."

dynamics allude to the loudness or softness of music. dynamics offer an approach to demonstrate articulation in sheet music. they to drive the enthusiastic substance of music through volume and force. maybe you could alter both the volume and the shading profundity on your screen at the same time. we can likewise think about the force side of elements as the quality of a note. a few notes are intended to be played delicately and gently, while others are intended to be played all the more firmly.  

some dynamics markings have a letter 'm,' which remains for mezzo, signifying 'medium.' so a mezzo piano unique stamping resembles this (mp) and intends to play medium calm, while a mezzo specialty dynamic resembles this (mf) and intends to play medium loud.