TABLE 10-14
The use of preservatives by food processors has become a controversial issue.Suppose two preservatives are extensively tested and determined safe for use in meats.A processor wants to compare the preservatives for their effects on retarding spoilage.Suppose 15 cuts of fresh meat are treated with preservative I and 15 are treated with preservative II,and the number of hours until spoilage begins is recorded for each of the 30 cuts of meat.The results are summarized in the table below. 
-Referring to Table 10-14,state the null and alternative hypotheses for testing if the population variances differ for preservatives I and II.
Definitions:
Total Revenue
The overall income generated by a business through the sale of goods or the delivery of services within a certain period.
Elasticity of Demand
Elasticity of Demand measures how much the quantity demanded of a good responds to a change in the price of that good, indicating how sensitive consumers are to price changes.
Necessity
An essential requirement or need for something.
Luxury Good
A good for which demand increases more than proportionally as income rises, often seen as non-essential but desirable.
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