The data in the accompanying table show the weight of randomly selected packages shipped by delivery companies A, B, and C.
a. Perform a one-way ANOVA using a=0.05 to determine if there is a difference in the average package weights shipped by these three delivery companies.
b. If warranted, perform a multiple comparison test to determine which pairs are different using a = 0.05.
|A(1)||B (2)||C (3)|