1. One of the more challenging problems confronting the water pollution control field is presented by the tanning industry. Tannery wastes are chemically complex. They are characterized by high values of biochemical oxygen demand, volatile solids, and other pollution measures. A study conducted by Virginia Polytechnic Institute and State University measured the percent reduction in total solids (x) and percent reduction in chemical oxygen demand (y) of 33 samples of chemically treated waste.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section: Chapter Questions
Problem 10T: Olympic Pole Vault The graph in Figure 7 indicates that in recent years the winning Olympic men’s...
icon
Related questions
Question

ANSWER ONLY letter D & E.

Linear Regression and Correlation Problem
1. One of the more challenging problems confronting the water pollution control field
is presented by the tanning industry. Tannery wastes are chemically complex. They
are characterized by high values of biochemical oxygen demand, volatile solids, and
other pollution measures. A study conducted by Virginia Polytechnic Institute and
State University measured the percent reduction in total solids (x) and percent
reduction in chemical oxygen demand (y) of 33 samples of chemically treated waste.
Table 11.1: Measures of Reduction in Solids and Oxygen Demand
Solids Reduction,
a (%)
3
Oxygen Demand
Reduction, y (%)
5
Solids Reduction,
1 (%)
36
Oxygen Demand
Reduction, y (%)
34
7
11
37
36
11
21
38
38
15
16
39
37
18
16
39
36
27
28
39
45
29
27
40
39
30
25
41
41
30
35
42
40
31
30
42
44
31
40
43
37
32
32
44
44
33
34
45
46
33
32
46
46
34
34
47
49
36
37
50
51
36
38
a. Compute the value of Sxx, Sy, Sxx, and r.
b. Determine the regression line model/equation.
c. Determine the coefficient of determination r? Explain the meaning of this quantity in
the context of this problem.
d. Using a = 0.01, test HO: B1 = 0 vs. H1: B1 6= 0
%3D
e. Imagine that the next solid reduction level is at 54%. what would be your best estimate
of the oxygen demand reduction?
Transcribed Image Text:Linear Regression and Correlation Problem 1. One of the more challenging problems confronting the water pollution control field is presented by the tanning industry. Tannery wastes are chemically complex. They are characterized by high values of biochemical oxygen demand, volatile solids, and other pollution measures. A study conducted by Virginia Polytechnic Institute and State University measured the percent reduction in total solids (x) and percent reduction in chemical oxygen demand (y) of 33 samples of chemically treated waste. Table 11.1: Measures of Reduction in Solids and Oxygen Demand Solids Reduction, a (%) 3 Oxygen Demand Reduction, y (%) 5 Solids Reduction, 1 (%) 36 Oxygen Demand Reduction, y (%) 34 7 11 37 36 11 21 38 38 15 16 39 37 18 16 39 36 27 28 39 45 29 27 40 39 30 25 41 41 30 35 42 40 31 30 42 44 31 40 43 37 32 32 44 44 33 34 45 46 33 32 46 46 34 34 47 49 36 37 50 51 36 38 a. Compute the value of Sxx, Sy, Sxx, and r. b. Determine the regression line model/equation. c. Determine the coefficient of determination r? Explain the meaning of this quantity in the context of this problem. d. Using a = 0.01, test HO: B1 = 0 vs. H1: B1 6= 0 %3D e. Imagine that the next solid reduction level is at 54%. what would be your best estimate of the oxygen demand reduction?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Algebra
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
Functions and Change: A Modeling Approach to Coll…
Functions and Change: A Modeling Approach to Coll…
Algebra
ISBN:
9781337111348
Author:
Bruce Crauder, Benny Evans, Alan Noell
Publisher:
Cengage Learning