A randomized complete block design is carried out, resulting in the following statistics:

Source x1 x2 x3 x4 Primary Factor 237.15 315.15 414.01 612.52 Block 363.57 382.22 438.33 SST = 364,428

a. Determine if blocking was effective for this design.

b. Using a significance level of 0.05, produce the relevant ANOVA and determine if the average responses of the factor levels are equal to each other.

c. If you discovered that there were differences among the average responses of the factor levels, use the LSD approach to determine which populations have different means.