The Operational experts of Woodbridge Electric have announced a breakthrough in the production process and the mean of the same bulb has increased to...

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?