Question: Methods for estimating strength and stiffness requirements should be conservative, in that they should overestimate rather than underestimate. The success rate of such a method

Methods for estimating strength and stiffness requirements should be conservative, in that they should overestimate rather than underestimate. The success rate of such a method can be measured by the probability of an overestimate. Consider a chi-square test to compare the success rates for two columns using a nondirectional alternative. Find the test statistics.

Short Columns Long Columns

No. of Success 304 360

No. of Trails 380 394

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