Random error in the mean value and the confidence

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The variance in the strength test values of 270 bricks is 6.89 (MN/m2)2with a mean of 6.92 MN/m2. What is the random error in the mean value and the confidence interval at 95%?

Reference no: EM131190970

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Random error in the mean value and the confidence : The variance in the strength test values of 270 bricks is 6.89 (MN/m2)2with a mean of 6.92 MN/m2. What is the random error in the mean value and the confidence interval at 95%?
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