7. Process Capability (6 marks) Solstella Energy is interested in getting a five-sun rating from the solar panel industry association for their solar panels. The rating would show potential customers that Solstella Energy's solar panels have been externally certified to meet or exceed the top output rating in the solar panel industry. Management is confident that earning this certification would improve their reputation and significantly increase sales. In order to achieve the prestigious five-sun rating, 98% or more of their solar panels produced must have a voltage output of 14 or more volts. Fortunately, Solstella Energy's engineering team has been testing and measuring various component and design alternatives in an effort to improve their solar panel voltage output. All alternatives have similar costs. The data on how each alternative would perform is provided below: Process Description Mean Output Voltage Output Voltage Standard Deviation Current Continue current design 15.00 0.60 Alternative #1 Reduced wire length 15.75 0.85 Alternative #2 Higher quality silicon 16.00 0.70 Alternative #3 Increased cell thickness 16.50 1.25 a. Prepare a table that shows how effectively each process would address the five-sun specification. (4 marks) Note: Add columns to the above table to calculate z-values, probability, and to comment on the capability. Show all calculations to receive full marks. b. Management would like to know which of the alternatives you recommend, if any, they undertake considering the five-sun specifications. Evaluate feasible alternatives and justify a single recommendation. (2 marks)