Answered: Ultra high-performance concrete (UHPC)…

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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Question

Ultra high-performance concrete (UHPC) is a relatively new construction material that is characterized by strong adhesive properties with other materials. The following data are the adhesion measurements (in mJ/m2) for UHPC specimens adhered to steel: 107.1, 109.5, 107.4, 106.8, 108.1. Assume that these sample observations were selected from a normal distribution. a) Calculate a two-sided 95% confidence interval for the true average work of adhesion for UHPC adhered to steel. b) Predict the resulting work of adhesion value resulting from a single future replication of the experiment by calculating a 95% prediction interval and compare the width of this interval to the width of the CI from Part a).

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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