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(a) Determine the 95% confidence interval of the mean value of N. Ans. (0.881, 1.427). In order to estimate the mean value of N to + 0.02 with 90% confidence, Assume that the variance of N, o2, is known and equal to 0.045 for this part. (Ans. 300). (b) how many additional piles should be tested?

(a) Determine the 95% confidence interval of the mean value of N. Ans. (0.881, 1.427). In order to estimate the mean value of N to + 0.02 with 90% confidence, Assume that the variance of N, o2, is known and equal to 0.045 for this part. (Ans. 300). (b) how many additional piles should be tested?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Home Work 7.2-2 As indicated in the table, five piles have been tested until failure; Test Actual Capacity Predicted Capacity P N =A/P No. A the load 1 20.5 13.6 1.51 measured at failure 2 18.5 20.4 0.91 denotes the actual capacity of the given pile. Observe that the capacity of each has 10.0 8.8 1.14 4 15.3 14.3 1.07 5 26.2 22.8 1.15 HW 8-I pile also been x of N s of N 1.154 predicted by a theoretical model as indicated in the 0.22 table. The factor N is simply the ratio of the actual pile capacity to the predicted pile capacity; i.e., N = A/P. (a) Ans. (0.881, 1.427). In order to estimate the mean value of N to + 0.02 with 90% Determine the 95% confidence interval of the mean value of N. (b) confidence, Assume that the variance of N, o2, is known and equal to 0.045 for this part. (Ans. 300). how many additional piles should be tested?
Transcribed Image Text:Home Work 7.2-2 As indicated in the table, five piles have been tested until failure; Test Actual Capacity Predicted Capacity P N =A/P No. A the load 1 20.5 13.6 1.51 measured at failure 2 18.5 20.4 0.91 denotes the actual capacity of the given pile. Observe that the capacity of each has 10.0 8.8 1.14 4 15.3 14.3 1.07 5 26.2 22.8 1.15 HW 8-I pile also been x of N s of N 1.154 predicted by a theoretical model as indicated in the 0.22 table. The factor N is simply the ratio of the actual pile capacity to the predicted pile capacity; i.e., N = A/P. (a) Ans. (0.881, 1.427). In order to estimate the mean value of N to + 0.02 with 90% Determine the 95% confidence interval of the mean value of N. (b) confidence, Assume that the variance of N, o2, is known and equal to 0.045 for this part. (Ans. 300). how many additional piles should be tested?
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