Instruction 10-11 A Quality Control Engineer Is in Charge of the Manufacture

question 99

Multiple Choice

Instruction 10-11
A quality control engineer is in charge of the manufacture of computer disks.Two different processes can be used to manufacture the disks.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 disks 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 Instruction 10-11,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:

Self-Continuity

The psychological concept referring to an individual's perception of consistency and coherence over time and across situations.

Nostalgia

A sentimental longing or wistful affection for the past, typically for a period or place with happy personal associations.

Self-Esteem

An individual's subjective evaluation of their own worth or abilities.

Better Than Average Effect

The tendency to rank oneself higher than most people on positive attributes.