Suppose That, for a Certain Exam, a Teacher Grades on a Curve

question 220

Short Answer

Suppose that, for a certain exam, a teacher grades on a curve according to the figure shown below. It is known that the grades follow a normal distribution with a mean of 40 and a standard deviation of 6. There are 45 students in the class. How many students should receive an A? Please, round your answer to the nearest integer. __________ student(s)

---

Definitions:

Weak Form

In finance, a theory suggesting that asset prices fully reflect all information contained in past trading data, meaning past prices and volumes cannot predict future prices.

Security Price

The security price is the current market value at which a particular security (like stocks, bonds) can be bought or sold in the financial markets.

Abnormal Return

The difference between the actual return of a security and the expected return predicted by an equilibrium model.

Stock

A type of security that signifies ownership in a corporation and represents a claim on part of the corporation's assets and earnings.