Use the Information for the Question(s)below

question 19

Multiple Choice

Use the information for the question(s) below.
Consider an economy with two types of firms,S and I.S firms always move together,but I firms move independently of each other.For both types of firm there is a 70% probability that the firm will have a 20% return and a 30% probability that the firm will have a -30% return.
-The standard deviation for the return on an portfolio of 20 type I firms is closest to:

• A)5.25%
• B)5.10%
• C)15.0%
• D)23.0%

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Definitions:

Ethanol

A volatile, flammable, colorless liquid commonly used as a biofuel and as the principal type of alcohol found in alcoholic beverages.

Corn

A cereal grain which serves as a staple food in many parts of the world, also used as feed for livestock and for various industrial applications.

Oil Prices

Oil prices denote the cost per barrel of crude oil, influenced by factors such as supply and demand, geopolitical issues, and market speculation.

Nonrenewable Natural Resource

Things such as oil, natural gas, and metals, that are either in actual fixed supply or that renew so slowly as to be in virtual fixed supply when viewed from a human time perspective.