=+ 8. A chemical engineer conducts an experiment to test the effects of gas flow rate (factor

Question:

=+ 8. A chemical engineer conducts an experiment to test the effects of gas flow rate (factor A) and liquid flow rate (factor B) on the gas film heat transfer coefficient (in Btu/hr ft2

). Four levels of each factor are used in the study, and two replications are conducted at each combination of factor levels:

Factor B 1 2 3 4 1 200, 211 226, 219 240, 249 261, 250 2 278, 267 312, 324 330, 337 381, 375 Factor A 3 369, 355 416, 402 462, 457 517, 524 4 500, 487 575, 593 645, 632 733, 718

a. Is there evidence of a significant interaction between the two factors? Use 5 .01.

b. Use 5 .01 to test the hypothesis that gas flow rate has no effect on the heat transfer coefficient.

c. Use 5 .01 to test the hypothesis that liquid flow rate has no effect on the heat transfer coefficient.

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