please i need the answer for question 2

124] (a) Establish whether mean building costs estimated by the three estimators differ; if yes, do a follow-up analysis to determine which are the same and which differ. (Use a = 0.05). List all necessary assumptions effective. and indicate which might be suspect. Also test whether blocking is [3] ( b) RBD Compute the relative efficiency of Randomized Block Design over Completely Randomized Design. CR 2. In a test of the effectiveness of advertising on product perception, 30 subjects n = 30 were randomly assigned to five treatment groups. Each group then received a particular advertisement regarding a ball-point pen. The subjects were permitted to K = 5 test their pen and plausibility of the advertisement. The subjects were then asked to "value" the pen by stating the price they would expect to find if they shopped for n1 = 6 such a pen at a national retail establishment. The results are given below (with ranks in the parantheses): [11] 2 Advertising groups 5 A B C D E 1.39 (19.5) 1.39 (19.5) 0.95 (4) 0.85 (2) 1.10 (10.5) 1.60 (25) 1.50 (23.5) 0.88 (1) 0.90 (3) 1.29 (15.5) 1.50 (23.5) 1.89 (29) 0.99 (6.5) 1.10 (10.5) 0.99 (6.5) 1.75 (28) 1.45 (21) 1.25 (14) 1.29 (15.5) 1.19 (13) 1.72 (27) 1.68 (26) 1.00 (8.5) 0.98 (5) 1.35 (17) 2.00 (30) 1.47 (22) 1.15 (12) 1.00 (8.5) 1.37 (18) 153 141 16 4 4. 5 80. 5 When testing for the equality of the product perceptions for various levels of advertising, it was found that there are differences between advertising levels (A & C), (A & D), (A & E), (B & C), (B & D) and (B & E). Suppose, we have no prior knowledge about the distributions of 5 advertising levels (i.e. non- parametric approach is needed). Establish whether the medians of 5 advertising levels differ, also, do a follow-up analysis to determine which are the same and which differ. (Use a = 0.05). 3. In a study to relate the travel time between locations ( y ) in a certain city to the distance between locations for two types of vehicles, passenger cars and trucks, the following model was proposed: y = Bo + Bix, + B2x 2 + B,x, x2+ 8, where