A Study Was Designed to Investigate the Effects of Two

question 12

Multiple Choice

A study was designed to investigate the effects of two variables - (1) a studentʹs level of mathematical anxiety and (2) teaching method - on a studentʹs 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 400 with a standard deviation of 40
On a standardized test. Assuming no information concerning the shape of the distribution is
Known, what percentage of the students scored between 320 and 480?

• A)at least 89%
• B)at least 75%
• C)approximately 95%
• D)approximately 68%

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Definitions:

Inventory Period

The average time that goods remain in inventory before being sold, a measure of inventory management efficiency.

Commercial Paper

An unsecured, short-term debt instrument issued by a corporation, typically for the financing of accounts receivable, inventories, and meeting short-term liabilities.

Field Warehouse Loan

A form of short-term financing where a lender provides a loan with inventory as collateral, which is stored on the borrower's premises but controlled by an independent third party.

Marketable Securities

Financial instruments that can be quickly converted into cash at market value, including stocks and bonds.