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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.
Preservative I Preservative II
I = 106.4 hours
II = 96.54 hours
SI = 10.3 hours SII = 13.4 hours
-Referring to Table 10-14, what is the value of the test statistic for testing if the population variances differ for preservatives I and II?
Labor
The physical and mental exertion of humans utilized in creating goods and services.
Leisure
Free time when one is not working or attending to other duties.
Output Price
The price at which a product or service is sold in the market.
Demand for Labor
The quantity of workers that employers are willing and able to hire at different wage levels in a given time period, reflecting the need for labor in producing goods and services.
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