An Analysis of the Grades on the First Test in History

question 44

Multiple Choice

An analysis of the grades on the first test in History 101 revealed that they approximate a normal curve with a mean of 75 and a standard deviation of 8. The instructor wants to award the grade of A to the upper 10% of the test grades. To the nearest percent,what is the dividing point between an A and a B grade?

• A)80
• B)85
• C)90
• D)95

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Definitions:

Majority of Votes

A voting outcome in which more than half of the votes cast are in favor of a particular option or candidate.

Margin of Error

An indicator of the precision of an estimate, showing how much the estimated value could vary from the true value.

Confidence Level

A statistical measure that quantifies the certainty of an estimation or test result, often expressed as a percentage.

Television Viewers

Individuals who watch content on a television, encompassing a broad demographic that consumes broadcasting or streamed media.