Find the two-sided confidence limits

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Yield stresses for shear were measured in a random sample consisting of 28 soil specimens. Plotting the data on normal probability paper showed no apparent departure from normal distribution. The sample standard deviation was found to be 285 kN/m2. Find the two-sided confidence limits (with equal probabilities in the two tails) for the standard deviation of the yield stress

Reference no: EM132518864

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