Oil Quality and Price

question 295

Essay

Oil Quality and Price
Quality of oil is measured in API gravity degrees--the higher the degrees API, the higher the quality. The table shown below is produced by an expert in the field who believes that there is a relationship between quality and price per barrel.

A partial Minitab output follows:




-{Oil Quality and Price Narrative} Conduct a test of the population coefficient of correlation to determine at the 5% significance level whether a positive linear relationship exists between the quality of oil and price per barrel.

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Definitions:

Double Coincidence

A situation in barter economies where two parties each possess an item the other wants, allowing for an exchange without the need for a common unit of value.

Small Denomination Time Deposits

Bank deposits that are held for a fixed term with a specified small minimum amount and earn interest over time.

Large Denomination Time Deposits

Time deposits in a bank or financial institution with a large minimum amount of money required, typically over $100,000, and a fixed term.

M2

A measure of the money supply that includes cash, checking deposits, and easily convertible near money, such as savings deposits, small time deposits, and money market mutual funds.