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3. Suppose that the length of iron rods from a certain factory follows the normal distribution with known standard deviation
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sample Mean (82= 6 n = 16 J = 0.2 x=1-0.88 20.12 z= Zala Zo.06 11.55 48 (From tables E = 3 X Z = in X 1.5548 TTE =10.07774 C.Note-if there is any understanding problem regarding this please feel free to ask via comment box..thank you

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