Each of three operators made two weighings of several silicon wafers. Results are presented in the following table for three of the wafers. All the wafers had weights very close to 54 g, so the weights are reported in units of μg above 54 g. (Based on the article "Revelation of a Microbalance Warmup Effect," J. Buckner, B. Chin, et al., Statistical Case Studies for Industrial Process Improvement, SIAM-ASA, 1997:39-45.)

a. Construct an ANOVA table. You may give ranges for the P-values.
b. Can it be determined from the ANOVA table whether there is a difference in the measured weights among the operators? If so, provide the value of the test statistic and the P-value. If not, explain why not.

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Wafer Operator Operator 2 Operator 3 11 15 210 208 11 113 10 6 205 201 102 105 14 10 208 207 108 111 2