You are a production manager at a parachute manufacturing company. Parachutes are woven in your factory using a synthetic fiber purchased from one of four different suppliers. The strength of these fibers is an important characteristic that ensures quality parachutes. You need to decide whether the synthetic fibers from each of your four suppliers result in parachutes of equal strength. Furthermore, to produce parachutes your factory uses two types of looms, the Jetta and the Turk. You need to determine if the parachutes woven at each type of loom are equally strong. You also want to know if any differences in the strength of the parachute that can be attributed to the four suppliers are dependent on the loom used. You conduct an experiment in which five different parachutes from each supplier are manufactured on each of the two different looms and collect and store the data - see dataset Parachute2Way (the same dataset in both 13th and 14th edition, use either one). At the 0.05 level of significance: a) Is there an interaction between supplier and loom? b) Is there an effect due to loom? c) Is there an effect due to supplier? d) Plot the mean strength for each supplier for each loom. e) If appropriate, use the Turkey procedure to determine differences between suppliers.