Question: Answer all questions with explanation. Zoom in for clear image. An article in the Journal of Strain Analyst (1983, Vol 18, No. 2) compares several

Answer all questions with explanation. Zoom in for clear image.

An article in the Journal of Strain Analyst (1983, Vol 18, No. 2) compares several methods for predicting the shear strength for steel plate girders: Data for two of these methods, the Karlsruhe and Lehigh procedures, when applied to nine specific girders, are shown in the accompanying Table. Construct a 95% confidence interval on the difference in mean shear strength for the two methods, Round Your answer to four decimal places (e g. 98 7654). Girder Karlsruhe Method Lehigh Method Differenced 51/1 1192 1053 0139 5271 1 161 0.989 0172 53/1 1332 1062 0.270 1062 0:272 1210 1.075 0135 1.172 0 228 1.042 0313 1431 1090 0441 1564 0518 Statistical Tables and Charts

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