Research reported the results of a study on the occurrence of oxygen and chloride in surface streams in central Washington state area. The following data are chloride concentration y (in milligrams per liter) and roadway area in the watershed x (in percentage) y 19.20 23.10 27.40 27.70 31.80 39.50 X 0.69 1.30 1.05 1.06 1.74 1.62 y 4.40 6.60 9.70 10.60 10.80 10.90 X 0.19 0.15 0.57 0.70 0.67 0.63 y 11.80 12.10 14.30 14.70 15.00 17.30 X 0.47 0.70 0.60 0.78 0.81 0.78 ✓ Fit the simple linear regression model using the method of least squares Find an estimate of 2 Estimate the mean chloride concentration for watershed that has 1% roadway area ✓ Find the fitted value corresponding to x = 0.47 ✓ Find the associated residual ✓ Test the hypothesis, with a = 0.01 H₁: B₁=0 H₁: B₁ * 0 Estimate the standard errors in in B₁ ✓ Find a 99% prediction interval on chloride concentration when roadway area x = 1.0% A. 21.038 B. 1.6629 C. (18.2066, 23.8694) D. 13.81 E. 1.93591 F. G. Reject Ho H.2.14169 I. 10.14 J. Fail to reject Ho K. (9.8201, 32.2559) L. 0.470+ 20.567x 0.0997 + 0.0414x
Research reported the results of a study on the occurrence of oxygen and chloride in surface streams in central Washington state area. The following data are chloride concentration y (in milligrams per liter) and roadway area in the watershed x (in percentage) y 19.20 23.10 27.40 27.70 31.80 39.50 X 0.69 1.30 1.05 1.06 1.74 1.62 y 4.40 6.60 9.70 10.60 10.80 10.90 X 0.19 0.15 0.57 0.70 0.67 0.63 y 11.80 12.10 14.30 14.70 15.00 17.30 X 0.47 0.70 0.60 0.78 0.81 0.78 ✓ Fit the simple linear regression model using the method of least squares Find an estimate of 2 Estimate the mean chloride concentration for watershed that has 1% roadway area ✓ Find the fitted value corresponding to x = 0.47 ✓ Find the associated residual ✓ Test the hypothesis, with a = 0.01 H₁: B₁=0 H₁: B₁ * 0 Estimate the standard errors in in B₁ ✓ Find a 99% prediction interval on chloride concentration when roadway area x = 1.0% A. 21.038 B. 1.6629 C. (18.2066, 23.8694) D. 13.81 E. 1.93591 F. G. Reject Ho H.2.14169 I. 10.14 J. Fail to reject Ho K. (9.8201, 32.2559) L. 0.470+ 20.567x 0.0997 + 0.0414x
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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Transcribed Image Text:Research reported the results of a study on the occurrence of oxygen and chloride in surface streams in
central Washington state area. The following data are chloride concentration y (in milligrams per liter)
and roadway area in the watershed x (in percentage)
y
19.20
23.10
27.40
27.70
31.80
39.50
0.69
X
1.30
1.05
1.06
1.74
1.62
y
4.40
6.60
9.70
10.60
10.80
10.90
X
0.19
0.15
0.57
0.70
0.67
0.63
V
11.80
12.10
14.30
14.70
15.00
17.30
X
0.47
0.70
0.60
0.78
0.81
0.78
✓ Fit the simple linear regression model using the method of least squares
Find an estimate of 2
✓ Estimate the mean chloride concentration for a watershed that has 1% roadway area
✓ Find the fitted value corresponding to x = 0.47
✓ Find the associated residual
✓ Test the hypothesis, with a = 0.01
H₁ B₁ = 0
H₁: B₁0
✓ Estimate the standard errors in
B₁
✓ Find a 99% prediction interval on chloride concentration when roadway area x = 1.0%
A. 21.038
B. 1.6629
C. (18.2066, 23.8694)
D. 13.81
E. 1.93591
F.
G. Reject Ho
H.2.14169
I. 10.14
J. Fail to reject Ho
K. (9.8201, 32.2559)
L. 0.0997 + 0.0414x
0.470+ 20.567x
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