How long should the company dishwashers be guaranteed

Reference no: EM13202290

Quality control studies for Dependable Dishwashers show the lifetime of a dishwasher follows a normal distribution with mean of 8 years and standard deviation of 1.2 years. The company will replace any dishwasher that fails during the guarantee period. How long should the company's dishwashers be guaranteed if the company wishes to replace no more than 2% of the dishwashers?

Reference no: EM13202290

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