Question

Y 1 The running time (in minutes) to failure of a machine component (Y) is believed to be related to: (x1) operating voltage, (x2) motor speed in RPM's and (xs) operating temperature, Eight (8) runs were made and the following results were obtained. Using alpha=.05, determine if main effect xi is significant. What are the values of F, and Ferit for x? Results at four (4) decimal places. X X2 X 2145 2 2155 2220 4 2225 5 2260 6 2266 2334 2340 3 -1 -1 -1 -1 +1 -1 -1 +1 +1 -1 -1 +1 +1 -1 +1 -1 +1 -1 +1 -1 +1 +1 +1 8 +1 Seleccione una: a. 8.5 and 2.125 O b. 12177.9412 and 12.2179 c. None are correct O d. 42.8824 and 12.2179 O e 5049.9412 and 12.2179

Answer 1

From the given information,

By using regression calculator,

The required correct answers are,

Fo= 12177.9412

Fcrit= 12.2179

i.e., Option b. is correct.

Thank you.

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