The following sample data give the flexural strength (MPa) for concretebeams of a certain type.7.3, 6.3, 6.8, 7.0, 7.6, 6.8, 7.0, 6.3, 7.9, 9.0, 7.8, 9.7, 7.8,11.6, 11.8, 10.7Calculate a point estimate of the population standard deviation o.Which estimator was used?O s = 1.81s = 1.66Οσ=1.75O § = 1.75

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Answered: The following sample data give the…

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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The following sample data give the flexural strength (MPa) for concrete beams of a certain type. 7.3, 6.3, 6.8, 7.0, 7.6, 6.8, 7.0, 6.3, 7.9, 9.0, 7.8, 9.7, 7.8, 11.6, 11.8, 10.7 Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion, and give the estimator you used. O Etr(6.25) = 8.09 μ. 8.21 * = 8.21 * = 8.14
Given Samples A and B below Sample A: 2.0 Sample B: 4.3 2.8 4.5 O a. Calculate the mean and standard deviation for each sample. Sample A: XA = Sample B: XB = ; SB = Round to two decimal places if necessary b. Calculate the coefficient of variation for each sample. Sample A: CVA = ; SA = _% 4.2 4.2 4.3 4.0 Sample B: CVB Round to two decimal places if necessary c. Which sample is more variable? o Sample A Sample B Neither sample is more variable than the other 4.4 4.3 3.7 4.9 _% 3.6 2.6 2.8 2.2 2.3 4.1

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The following sample data give the flexural strength (MPa) for concrete beams of a certain type. 7.3, 6.3, 6.8, 7.0, 7.6, 6.8, 7.0, 6.3, 7.9, 9.0, 7.8, 9.7, 7.8, 11.6, 11.8, 10.7 Calculate a point estimate of the population standard deviation o. Which estimator was used?