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pected value of 28-day strength when accelerated strength We are given the accelerated strength, x = 2,580 psi. Use this value of x in the given regression line equation in order to find the expected value of 28-day strength when the accelerated strength is 2,580 psi. y 1,840+ 1.4x = 1,840+ 1.42580✔✔ = 5452✔ 5,452 Step 2 2,580 The expected value of 28-day strength (in pounds per square inch) with an accelerated strength of 2,580 psi is 5452✔ (b) By how much can we expect 28-day strength to change when accelerated strength increases by 1 psi? 5,452 psl. Recall the formula for the regression line: y =B₁ + B₂x, where is the y-intercept and , represents the slope, which is, by definition, the change in y for every one unit increase in x. Recall that we were previously given the regression equation y = 1,840 + 1.4x. We can apply this definition situation by saying when accelerated strength increases by 1 psi, the expected change in 28-day strength (in pounds per square inch) is X psi. slope to this

pected value of 28-day strength when accelerated strength We are given the accelerated strength, x = 2,580 psi. Use this value of x in the given regression line equation in order to find the expected value of 28-day strength when the accelerated strength is 2,580 psi. y 1,840+ 1.4x = 1,840+ 1.42580✔✔ = 5452✔ 5,452 Step 2 2,580 The expected value of 28-day strength (in pounds per square inch) with an accelerated strength of 2,580 psi is 5452✔ (b) By how much can we expect 28-day strength to change when accelerated strength increases by 1 psi? 5,452 psl. Recall the formula for the regression line: y =B₁ + B₂x, where is the y-intercept and , represents the slope, which is, by definition, the change in y for every one unit increase in x. Recall that we were previously given the regression equation y = 1,840 + 1.4x. We can apply this definition situation by saying when accelerated strength increases by 1 psi, the expected change in 28-day strength (in pounds per square inch) is X psi. slope to this

Structural Analysis
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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Step 1 (a) What is the expected value of 28-day strength when accelerated strength = 2,580? We are given the accelerated strength, x = 2,580 psi. Use this value of x in the given regression line equation in order to find the expected value of 28-day strength when the accelerated strength is 2,580 psi. y = 1,840 + 1.4x = 1,840 + 1. = 5452✔✔✔ 2580✔✔ Step 2 5,452 2,580 The expected value of 28-day strength (in pounds per square inch) with an accelerated strength of 2,580 psi is 5452✔ (b) By how much can we expect 28-day strength to change when accelerated strength increases by 1 psi? 5,452 psi. Recall the formula for the regression line: y = Bot Box, where is the y-intercept and ₁ represents the slope, which is, by definition, the change in y for every one unit increase in x. Recall that we were previously given the regression equation y = 1,840 + 1.4x. We can apply this definition of slope to this situation by saying when accelerated strength increases by 1 psi, the expected change in 28-day strength (in pounds per square inch) is X psi.
Transcribed Image Text:Step 1 (a) What is the expected value of 28-day strength when accelerated strength = 2,580? We are given the accelerated strength, x = 2,580 psi. Use this value of x in the given regression line equation in order to find the expected value of 28-day strength when the accelerated strength is 2,580 psi. y = 1,840 + 1.4x = 1,840 + 1. = 5452✔✔✔ 2580✔✔ Step 2 5,452 2,580 The expected value of 28-day strength (in pounds per square inch) with an accelerated strength of 2,580 psi is 5452✔ (b) By how much can we expect 28-day strength to change when accelerated strength increases by 1 psi? 5,452 psi. Recall the formula for the regression line: y = Bot Box, where is the y-intercept and ₁ represents the slope, which is, by definition, the change in y for every one unit increase in x. Recall that we were previously given the regression equation y = 1,840 + 1.4x. We can apply this definition of slope to this situation by saying when accelerated strength increases by 1 psi, the expected change in 28-day strength (in pounds per square inch) is X psi.
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