Home Work 7.2-2 Test Actual Capacity Predicted Capacity P N=A/P As indicated in the table, five piles have been tested until failure; the load measured denotes the actual capacity of the given pile. Observe that the capacity of each pile predicted by a theoretical model as indicated in the table. The factor N is simply the ratio of the actual pile capacity to the predicted pile capacity; i.e., N = A/P. (a) Determine the 95% confidence interval of the mean value of N. No. A 20.5 13.6 1.51 at failure 18.5 20.4 0.91 3 10.0 8.8 1.14 15.3 14.3 1.07 26.2 22.8 1.15 HW s-I f of N sof N has also been 1.154 0.22 Ans. (0.881, 1.427). (b) In order to estimate the mean value of N to + 0.02 with 90% confidence, Assume that the variance of N, a?, is known and equal to 0.045 for this part. (Ans. 300). how many additional piles should be tested?

Home Work 7.2-2 Test Actual Capacity Predicted Capacity P N=A/P As indicated in the table, five piles have been tested until failure; the load measured denotes the actual capacity of the given pile. Observe that the capacity of each pile predicted by a theoretical model as indicated in the table. The factor N is simply the ratio of the actual pile capacity to the predicted pile capacity; i.e., N = A/P. (a) Determine the 95% confidence interval of the mean value of N. No. A 20.5 13.6 1.51 at failure 18.5 20.4 0.91 3 10.0 8.8 1.14 15.3 14.3 1.07 26.2 22.8 1.15 HW s-I f of N sof N has also been 1.154 0.22 Ans. (0.881, 1.427). (b) In order to estimate the mean value of N to + 0.02 with 90% confidence, Assume that the variance of N, a?, is known and equal to 0.045 for this part. (Ans. 300). how many additional piles should be tested?

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter29: Tolerance, Clearance, And Interference

Section: Chapter Questions

Problem 17A: A tool and die maker grinds a pin to an 18.25-millimeter diameter as shown in Figure 29-13.The pin...

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