1. (15 Points) Three aggregates are to be mixed together. For each aggregate, the percent determined and the blended percent passing also shown in the table (last two columns). passing a set of five sieves is shown in the table below. Two separated blends were Determine the error variances for each blend and indicate which is the better blend of the two. Sieve % Passing% Passing% Passing Target Aggregate Aggregate Aggregate Blend 40:30:30 Blended % Passing 61,0 Size 35:40:25 Blended (mm) %Passing 59.8 A 9.5 C 85 70 65 50 35 40 4.75 47.5 46.0 46 30 21.5 14.2 8.9 0.6 21.5 35 25 25 10 20 0.3 14.2 13 8.8 0.15 17 0 7