Question 5.20: Refer to Example 5.18. Assume that on the basis of a very la...

Principles of Statistics for Engineers and Scientists

Refer to Example 5.18. Assume that on the basis of a very large number of previous measurements of other beams, the population of shear strengths is known to be approximately normal, with standard deviation σ = 180.0 kN. Find a 99% confidence interval for the mean shear strength.

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