A Study Was Designed to Investigate the Effects of Two

question 102

Multiple Choice

A study was designed to investigate the effects of two variables - (1) a student's level of mathematical anxiety and (2) teaching method - on a student's achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 350 with a standard deviation of 40 on a standardized test. Assuming a mound-shaped and symmetric distribution, what percentage of scores exceeded 270?

• A) approximately 95%
• B) approximately 100%
• C) approximately 84%
• D) approximately 97.5%

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Definitions:

Zero-Coupon Bond

A debt security that doesn't pay periodic interest, sold at a discount from its face value, and repays the face value at maturity.

Yield To Maturity

The total return anticipated on a bond if the bond is held until it matures, considering both the interest payments and the capital gain or loss.

Market Price

The price at which an asset or service is traded in the open market.

Treasury Bills

Short-term government securities issued at a discount from the face value and maturing at par, representing a form of borrowing by the government.