A Professor Noted That the Grades of His Students Were

question 115

Multiple Choice

A professor noted that the grades of his students were normally distributed with a mean of 75.07 and a standard deviation of 11.65. If only 10 percent of the students received grades of A, what is the minimum score needed to receive an A?

• A) 80.00
• B) 85.00
• C) 90.00
• D) 95.00

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Definitions:

Demand and Supply

Fundamental economic concepts representing the quantity of a good or service consumers are willing and able to purchase and the quantity offered by sellers.

Inferior Good

An inferior good is a type of good whose demand decreases when consumer income rises, unlike normal goods, for which the opposite is observed.

Income

Earnings received by an individual or entity in exchange for labor or investment, typically expressed in monetary terms.

Demand Curve

A pictorial representation that maps out the correlation between a good's price and its demand over an allotted time.