A bacteriologist tested the effect of five different sources of seed inoculum (A, B, C, D and E) on the dry matter yield (kg/plot) of alfalfa. The results are shown below:   Blocks I A    34.8 B    33.7 D    30.4 C    32.7 E    24.4 II D    37.0 E    28.8 B    33.5 A    35.6 C    33.4 III C    35.8 D    35.6 A    37.9 E    26.7 B    35.1 IV B    34.8 C    39.1 D    32.7 E    32.4 A    37.4   a.    Calculate the analysis of variance and investigate at α = 0.05, whether there were any differences between the five seed inoculum on the dry matter yield (kg/plot) of alfalfa. State your null hypothesis and your conclusions. (10 Marks) b.    Comment on the use of blocks. (3 Marks) c.    Carry out mean comparisons using least significant differences and recommend the best inoculum for farmers.  (7 Marks)

1. alwaysrain irrigation, inc. would like to determine capacity requirements for the next four years. currently, two production lines are in place for making bronze and plastic sprinklers. three types of sprinklers are available in both bronze and plastic: 90-degree nozzle sprinklers, 180-degree nozzle sprinklers, and 360-degree nozzle sprinklers. management has forecast demand for the next four years as follows: both production lines can produce all the different types of nozzles. the bronze machines needed for the bronze sprinklers require two operators and can produce up to 12,000 sprinklers. the plastic injection molding machine needed for the plastic sprinklers requires four operators and can produce up to 200,000 sprinklers. three bronze machines and only one injection molding machine are available. what are the capacity requirements for the next four years? (assume that there is no learning.)