Two machines are currently in use in a process at the Dennis Kira Mfg. Co. The standards for this process are and . Machine One is currently producing with mean." and standard deviation .000". Machine Two is currently producing with mean ." and standard deviation .000". Which machine has the higher capability index? Machine One has an index of nothing (round your response to two decimal places).

Complete question :

Two machines are currently in use in a process at the Dennis Kira Mfg. Co. The standards for this process are LSL = 430" and USL = .435". Machine One is currently producing with mean = 432" and standard deviation .0005". Machine Two is currently producing with mean .4315" and standard deviation .0004". Which machine has the higher capability index? Machine One has an index of ?(round your response to two decimal places)

Machine 1 has higher capability index

Machine 1 has capability index of 1.33

Explanation:

Given the following :

Lower specification limit (LSL) = 0.430

Upper Specification Limit (USL) = 0.435

MACHINE 1:

mean = 0.432

Standard deviation(σ) = 0.0005

MACHINE 2:

mean = 0.4315

Standard deviation = 0.0004

The Process Capability Index (Cpk) :

Min[(USL - mean) /3σ, (mean - LSL) / 3σ]

FOR MACHINE 1:

MIN[(0.435 - 0.432) /3(0.0005), (0.432 - 0.430) / 3(0.0005)]

MIN[ 2. 9167, 1.3333]

Hence, Cpk of Machine 1 = 1.33

FOR MACHINE 2:

MIN[(0.435 - 0.4315) /3(0.0004), (0.4315 - 0.430) / 3(0.0004)]

MIN[ 2, 1.25]

Hence, Cpk of Machine 2 = 1.25

Machine 1 has higher capability index

Machine 1 has capability index of 1.33

d. to get countries or companies to stop doing something objectionable.

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