Samples of aluminum-alloy channels were tested for stiffness. The following frequency distribution was obtained. The distribution is assumed to be normal.stiffnessfrequency248024402335240040332360232021What is the approximate standard deviation of the population from which the samples were taken?O 19O 23O 37O 51

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Answered: What is the approximate standard…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Given a most probable value of 54.235 meters, which of the following residuals belongs to the most accurate measurement? O 0.20 feet O -1.235 feet O -0.09 feet O 0.14 feet
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Rainfall depth over a watershed is monitored through six numbers of well distributed rain gauges. Gauged data are given below Rain gauge Number: Rainfall depth (mm): Area of Thiessen Polygon (× 104 m²):95 100 98 80 85 92 The Thiessen mean value (in mm, up to one decimal place) of the rainfall is 1 2 3 4 5 6 470465435525480510
. By using this information. The variance for this project is.. Dep M. Act A. 10 15 18 20 30 34 16 19 28 A. 15.20 C. 11.21 B. 0.2 D. 20
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Sir Alfonse sent out five students to measure a distance between two points marked on the ground using their pace factor. The students came up with the following five different values: 50.13, 47.90, 51.04, 50.47, and 48.22 meters. Assuming these values are equally reliable and that variations result from accidental errors, determine the most probable value of the distance measured.
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Q1) During a storm , the hourly rainfall data observed was as follows: Time (hrs) Rainfall (mm) 0 1 2 3 4 5 6 78 9 0 25 20 45 30 10 0 15 10 0 Calculate and plot the following: 1) Hyetograph 2) Mass Curve.
3.3330 15920 10.333 x₁ 16.710 2.220 9.6120 X2 = -1.5611 -2.6850 5.1792 X3 хя 7953 8.208 2.7756

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What is the approximate standard deviation of the population from which the samples were taken? O 19 O 23 37