A chemical engineer is studying the effects of temperature and catalyst on the percentage of undesired byproduct in the output of a chemical reactor. Orders of testing were determined using random numbers. Percentage of the byproduct is shown in the table below.
Temperature, °C
Catalyst
140
150
#1
2.3
1.6
1.3
2.8
#2
3.6
3.0
3.4
3.8
The diagnostic plots recommended in part (c) of section 12.1 were carried out and showed no significant discrepancies. Can we conclude (at the 5% level of significance) that catalyst or temperature or their interaction affects the percentage of byproduct?
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