A clothing manufacturer purchased some newly designed sewing machines in the hopes that production would be increased. The production records (in units/week) of a random sample of workers are shown below. Worker Old Machine New Machine 59 57 57 62 60 61 66 63 68 59 63 72 74 56 58 64 10 63 64 Let a = 0.05 be the level of significance. Use the Wilcoxon signed-rank test to determine whether the new machines have significantly increased production. What would you conclude if you use the sign test instead? Describe your steps. Can one use the t-test for matched samples for this