Question

In an effort to improve the efficiency in a large shop floor operation, three different workspace designs and two different storage/retrieval systems were tested. Process flow time (in days) was measured for three randomly selected operations through each combination of workspace design and storage/retrieval systems. Based on the following interaction plot obtained from performing two-way ANOVA, we can say

a. Workspace design 1 is best regardless of storage/retrieval system used.

b. Storage/retrieval system 2 is best regardless of workspace design used.

c. The shop floor operation should use Workspace design 1 in combination with storage/retrieval system 1.

d. The shop floor operation should use Workspace design 2 in combination with storage/retrieval system 1.

e. The shop floor operation should use Workspace design 3 in combination with storage/retrieval system 2.    

Interaction Plot for Flow Time Data Means Workspace Design 4.2 1 2 4.0 3.8 3.6 3.4 3.2 3.0 2 Storage System Mean

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Answer #1

The shop floor operation should use Workspace design 2 in combination with storage/retrieval system 1 to improve the efficiency in a large shop floor operation.

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