For 28 to 31, you have the productivity output for three different manufacturing operating policies. Assuming normality and independency test to see if the mean performances are equal or not at alpha=0.05 Policy 1 - 231, 253, 242, 251 Policy 2 - 242, 239, 247, 253 Policy 3 - 214, 224, 231, 219

What is the approximate SST?

a. 573 b. 691 c. 1382 d. 1955

What is the approximate test statistic?

a. 2.54 b. 3.12 c. 6.45 d. 10.84

What is critical value at 0.05?

a. 3.49 b. 3.98 c. 4.26 d. none of the above

The decision for Ho: of identical means and Ha: of not identical means at a= 0.05?

a. Cannot reject Ho b. Reject Ho c. Either d. Too close to call