Question: A Quality Analyst wants to construct a control chart for determining whether five machines, all producing the same product, are under control with regard to

A Quality Analyst wants to construct a control chart for determining whether five machines, all producing the same product, are under control with regard to a particular quality variable. Accordingly, four units of putputs from each machine are collected: Machine Measurement 1 Measurement 2 Measurement 3 Measurement 4 M1 443 409 415 428 M2 398 431 404 450 M3 465 403 462 450 M4 452 461 439 452 M5 409 452 455 459 Does this process appear to be out of control? If yes, identify a machine using the factors of three sigma control limits.

a. M1

b. M4

c. Process is in Control

d. M3

e. M5

f. M2

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