An important property of plastic clays is the percent of shrinkage on drying. For a certain type of plastic clay, 45 test specimens showed an average shrinkage percentage of 18.4. Assuming that the percentage shrinkage of plastic clays is normally distributed with a standard deviation of 1.1, estimate the lower limit of the true average percent of shrinkage for specimens of this type in a 95% confidence interval.

An important property of plastic clays is the percent of shrinkage on drying. For a certain type of plastic clay, 45 test specimens showed an average shrinkage percentage of 18.4. Assuming that the percentage shrinkage of plastic clays is normally distributed with a standard deviation of 1.1, estimate the lower limit of the true average percent of shrinkage for specimens of this type in a 95% confidence interval.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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