)The Operational experts of Woodbridge Electric have announced a breakthrough in the production process and the mean of the same...

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)The Operational experts of Woodbridge Electric have announced a breakthrough in the production process and the mean of the same bulb has increased to 9000 hours and the standard deviation has decreasing to 200 hours (again assume a normal distribution).  Using the same 2.5% constraint how does this affect the warranty? Is this good news or bad for the customers and the firm?

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