a certain brand of refrigerator is known by themanufacturer to last for 14 years

Question

a certain brand of refrigerator is known by themanufacturer to last for 14 years with a standard deviation of of2.5 years. a)If the manufacturer guarantees them foi 10yrs, what % of them will they nneed to replace underwarranty? b) If the manufacturer does not want torepalce more than 1 % , for how many years should they guaranteethem ? a certain brand of refrigerator is known by themanufacturer to last for 14 years with a standard deviation of of2.5 years. a)If the manufacturer guarantees them foi 10yrs, what % of them will they nneed to replace underwarranty? b) If the manufacturer does not want torepalce more than 1 % , for how many years should they guaranteethem ?

Explanation / Answer

=14, =2.5 a) P(X

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