A Professor at a Local University Noted That the Grades

question 68

Short Answer

A professor at a local university noted that the grades of her students were normally distributed with a mean of 78 and a standard deviation of 10.
a.The professor has informed us that 16.6% of her students received grades of A. What is the minimum score needed to receive a grade of A?
b.If 12.1% of her students failed the course and received Fs, what was the maximum score among those who received an F?
c.If 33% of the students received grades of B or better (i.e., As and Bs), what is the minimum score of those who received a B?

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Definitions:

Trade Surplus

A situation where a country's exports exceed its imports, indicating that it is selling more goods and services to other countries than it is buying.

U.S. Exports

Goods, services, and capital sent from the United States to other countries, contributing to the country's economy.

Net Capital Outflow

The difference between a country's savings and its domestic investments, representing the amount of money that flows out of the country to invest abroad minus the amount of money that flows into the country from foreign investors.

Net Exports

The value of a country's total exports minus its total imports; a measure of a nation's foreign trade balance.