The given data file's name is 'slump.txt'

Homework Matlab 8 normcdf, normpdf, etc. Engineering Background: When concrete is being poured for a highway or a concrete building, the supervising engineer will typically collect some wet concrete for a slump test. In this test, the concrete is put into a conical container, which is then flipped over. The container is carefully removed, and the vertical subsidence of the concrete (the slump) is then measured (typically in mm.) The amount of slump is related to the ultimate strength of the concrete. Too much slump implies too much water in the mix, and the concrete will be weak. Too little slump implies too little water in the mix, and the concrete will be brittle. Either way the supervising site engineer can send bad concrete back to the concrete plant as inadequate 2 3 4 6 Figure 1: How to do a slump test Assignment: You are given a set of slump test data, which you can assume is normally-distributed. You would like to estimate probabilistically what type of slump behavior you will observe as you continue to do these tests throughout the construction project. Write a Matlab script that will Load in the data Find the mean and standard deviation of the data Plot the modeled normal pdf and CDF using the mean and standard deviation you have found. These plots should be properly labeled and titled. Make sure you choose a range for the x-variable to show the entire shape of the PDF and CDF Using norm inv to find the z-value, find a 75% confidence interval for the average slump of this concrete mix. Hint: this is what you did last class.) 1) 2) 3) 4)