TABLE 10-12 A Quality Control Engineer Is in Charge of the Manufacture

question 186

Multiple Choice

TABLE 10-12
A quality control engineer is in charge of the manufacture of USB flash drives.Two different processes can be used to manufacture the flash drives.He suspects that the Kohler method produces a greater proportion of defects than the Russell method.He samples 150 of the Kohler and 200 of the Russell flash drives and finds that 27 and 18 of them,respectively,are defective.If Kohler is designated as "Group 1" and Russell is designated as "Group 2," perform the appropriate test at a level of significance of 0.01.
-Referring to Table 10-12,the hypotheses that should be tested are

• A)H₀ : π₁ - π₂ = 0 versus H₁ : π₁ - π₂ ≠ 0.
• B)H₀ : π₁ - π₂ ≠ 0 versus H₁ : π₁ - π₂ = 0.
• C)H₀ : π₁ - π₂ ≤ 0 versus H₁ : π₁ - π₂ > 0.
• D)H₀ : π₁ - π₂ ≥ 0 versus H₁ : π₁ - π₂ < 0.

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Definitions:

Marginal Benefit

The supplementary value or advantage gained by using or generating one more quantity of a good or service.

Marginal Benefits

The additional benefits or advantages gained from an increase in an activity or the consumption of a good or service.

Flood-Control Projects

Initiatives and constructions undertaken to manage and prevent flooding in vulnerable areas, typically involving barriers, dams, and water diversion systems.

Spillovers

Refers to the impact that an economic activity has on unrelated third parties, which can be either positive or negative.