A service process has three stages. The error percentages are: 8% at stage one, 7% at stage two, and 9% at stage three. The connection logic of the three stages is that a good overall outcome happens only when all stages individually have good outcomes. (a)[4] Draw the event tree for this situation with all necessary details. (b)[10] Find the probabilities of defective and good overall outcomes (6 decimals). (c)[2] Calculate and interpret the EPMO of this process (1 decimal). (d)[4] Calculate the sigma level of the process (2 decimals) and state it. Sketch the sigma level.