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[D.Khaled]

المشاركة الأصلية كتبت بواسطة shenosheno a survey found that the microwave ovens have an average life of 3 years with a standard deviation of 0.5 year. Assume the variable is normally distributed. What percent of microwave ovens would be replaced if a warranty of 18 months were given? A) 0.13% b) 2.28% c) 10.56% d) 0.62%

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