HW 4.17 Business 210 Chapter 11 Johnson Lawn Care manufactures and assembles lawnmowers that are sold all over the US. Two different procedures have been proposed for mounting the engine on the mower frame. To evaluate the two procedures a sample of six workers is timed using mounting procedure A and five different workers are timed using mounting procedure B. Test at the 1% significance level to see if Procedure A mounting times are greater than Procedure B. (Hint: given S sub p squared = 5.17) Procedure A: (mounting times in minutes): 4 6 9 7 64 Mean completion time = 6 min Sample std deviation = 3.27 Procedure B: (mounting times in minutes): 249 3 2 Mean completion time = 4 min Sample std deviation = 2.67