An electrical engineer wants to compare the resistance of four types of wire made from different materials. Five wires of equal lengths and cross sectional areas are prepared for each of the four wire types. Each section of wire is randomly tested by sending a current through the wire and measuring the resistance. Select one: 0 a. H0: [11 at [12 :t [13 1 [14 i [15 vs. the alternative that all the wire size means are equal 0 b. H0: [11 :t [12 at [.13 at [14 vs. the alternative that all the wire type means are equal 0 c. H0: [11 = [12 = [13 = [14 = [15 vs. the alternative that not all the wire size means are equal 0 d. H0: [11 = [12 = [13 = [14 vs. the alternative that not all the wire type means are equal 0 e. H0: [11 = [12 = [13 = [14 vs. the alternative that not all the wire size means are equal