Part 5 Suppose that the observed value of permeability at x = 3.7 is y = 46.1. Calculate the value of the corresponding residual. (Round your answer to 2 decimal places.)
Part 5 Suppose that the observed value of permeability at x = 3.7 is y = 46.1. Calculate the value of the corresponding residual. (Round your answer to 2 decimal places.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Part 5
Transcribed Image Text:An article in Concrete Research ("Near Surface Characteristics of Concrete: Intrinsic Permeability." Vol. 41, 1989), presented data on
compressive strengthx and intrinsic permeability y of various concrete mixes and cures. Summary quantities are n = 14,
y = 572, Ey = 23,530, = 43, Ex = 157.42, and Exy; = 1697.80. Assume that the two variables are related
according to the simple linear regression model.
Statistical Tables and Charts
Part 1
Your Answer
Correct Answer
Correct.
Calculate the least squares estimate of the slope. (Round your answer to 3 decimal places.)
-2.330
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20% score reduction after attempt 1
Part 2
Your Answer
Correct Answer
Correct.
Calculate the least squares estimate of the intercept. (Round your answer to 3 decimal places.)
48.014
Transcribed Image Text:Part 3
Your Answer
Correct Answer
Correct.
Use the equation of the fitted line to predict what permeability would be observed when the compressive strength is x =4,3.
(Round your answer to 2 decimal places.)
37.99
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Part 4
Your Answer
Correct Answer
v Correct.
Give a point estimate of the mean permeability when compressive strength is x = 3.7. (Round your answer to 2 decimal places.)
39.39
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20% score reduction after attempt 1
Part 5
Suppose that the observed value of permeability at x = 3.7 is y =46.1. Calculate the value of the corresponding residual. (Round
your answer to 2 decimal places.)
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