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Perform a two way ANOVA with replication.
You are the production manager of a company. Parachutes are woven in your factory using a synthetic fiber purchased from one of four different suppliers. The most important outcome for parachutes is strength of the fabric. You must decide whether the synthetic fibers from your four suppliers result in parachutes of equal strength (one main effect).There are two types of looms in the factory: the Jetta and the Turk. Are the parachutes woven on the Jetta looms and those woven on the Turks looms equally strong (second main effect)? Also, are any differences in the strength of the parachute that can be attributed to the four suppliers dependent on the type of loom used (interaction effect)? You perform an experiment to answer these questions and must eventually decide which supplier and type of loom to use in order to manufacture the strongest parachutes. The data is below:
1
2
3
4
jetta
20.6
22.6
27.7
21.5
18
24.6
18.6
20
19
19.6
20.8
21.1
21.3
23.8
25.1
23.9
13.2
27.1
17.7
16
turk
18.5
26.3
25.4
24
25.3
25.2
19.9
17.2
21.2
24.7
17.5
24.5
22.9
20.4
Show the excel output needed and answer the following:
- Are there main effects?
- Is there an interaction effect?
- What are the managerial implications of these findings?
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