[~Me~]

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A survey found that the microwave ovens have an average life of 2 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 21 months were given?
A) 6.68% B) 30.85% C) 93.32% D) 69.15%


الاجابه b

اذا واحد حلها يا شباب ما يحتاج الثاني يحلها ما ابغى اتعبكم والله