Brawdy Plastics, Inc., produces plastic seat belt retainers for General Motors at the Brawdy Plastics plant in Buffalo, New York. After final assembly and painting, the parts are placed on a conveyor beit that moves the parts past a final inspection station. How fast the parts move past the final inspection station depends upon the line speed of the conveyor belt (feet per minute). Although faster line speeds are desirable, management is concerned that increasing the line speed too much may not provide enough time for inspectors to identify which parts are actually defective. To test this theory, Brawdy Plastics conducted an experiment in which the same batch of parts, with a known number of defective parts, was inspected using a variety of line speeds. The following data were collected. Line Speed Number of Defective Parts Found 20 23 20 21 30 20 30 15 40 14 40 18 50 14 50 11 (a) Develop a scatter diagram with the line speed as the independent variable. 25T 25 25 20 20 20 20 15 15 15 15 10 능 101 * 10 남 101 10 20 30 40 50 20 30 40 50 30 40 50 30 40 50 60 10 60 10 20 60 10 20 60 Line Speed (feet per minute) Line Speed (feet per minute) Line Speed (feet per minute) Line Speed (feet per minute) (b) what does the scatter diagram developed in part (a) indicate about the relationship between the two variables? O There appears to be a positive relationship between line speed (feet per minute) and the number of defective parts. O There appears to be no noticeable relationship between line speed (feet per minute) and the number of defective parts. O There appears to be a negative relationship between line speed (feet per minute) and the number of defective parts. (c) Use the least squares method to develop the estimated regression equation. (d) Predict the number of defective parts found for a line speed of 35 feet per minute.
Brawdy Plastics, Inc., produces plastic seat belt retainers for General Motors at the Brawdy Plastics plant in Buffalo, New York. After final assembly and painting, the parts are placed on a conveyor beit that moves the parts past a final inspection station. How fast the parts move past the final inspection station depends upon the line speed of the conveyor belt (feet per minute). Although faster line speeds are desirable, management is concerned that increasing the line speed too much may not provide enough time for inspectors to identify which parts are actually defective. To test this theory, Brawdy Plastics conducted an experiment in which the same batch of parts, with a known number of defective parts, was inspected using a variety of line speeds. The following data were collected. Line Speed Number of Defective Parts Found 20 23 20 21 30 20 30 15 40 14 40 18 50 14 50 11 (a) Develop a scatter diagram with the line speed as the independent variable. 25T 25 25 20 20 20 20 15 15 15 15 10 능 101 * 10 남 101 10 20 30 40 50 20 30 40 50 30 40 50 30 40 50 60 10 60 10 20 60 10 20 60 Line Speed (feet per minute) Line Speed (feet per minute) Line Speed (feet per minute) Line Speed (feet per minute) (b) what does the scatter diagram developed in part (a) indicate about the relationship between the two variables? O There appears to be a positive relationship between line speed (feet per minute) and the number of defective parts. O There appears to be no noticeable relationship between line speed (feet per minute) and the number of defective parts. O There appears to be a negative relationship between line speed (feet per minute) and the number of defective parts. (c) Use the least squares method to develop the estimated regression equation. (d) Predict the number of defective parts found for a line speed of 35 feet per minute.
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:Brawdy Plastics, Inc., produces plastic seat belt retainers for General Motors at the Brawdy Plastics plant in Buffalo, New York. After final assembly and painting, the parts are placed on a conveyor belt that moves the parts past a final inspection station. How fast the parts move past the final inspection station depends upon the
line speed of the conveyor belt (feet per minute). Although faster line speeds are desirable, management is concerned that increasing the line speed too much may not provide enough time for inspectors to identify which parts are actually defective. To test this theory, Brawdy Plastics conducted an experiment in which the
same batch of parts, with a known number of defective parts, was inspected using a variety of line speeds. The following data were collected.
Number of
Line
Defective
Parts Found
Speed
20
23
20
21
30
20
30
15
40
14
40
18
50
14
50
11
(a) Develop a scatter diagram with the line speed as the independent variable.
25
25
25
25
20
20-
20
20
15
15
15
15
10
10
10
10
5-
5-
5-
10
20
30
40
50
60
10
20
30
40
50
60
10
20
30
40
50
60
10
20
30
40
50
60
Line Speed (feet per minute)
Line Speed (feet per minute)
Line Speed (feet per minute)
Line Speed (feet per minute)
(b) What does the scatter diagram developed in part (a) indicate about the relationship between the two variables?
O There appears to be a positive relationship between line speed (feet per minute) and the number of defective parts.
O There appears to be no noticeable relationship between line speed (feet per minute) and the number of defective parts.
O There appears to be a negative relationship between line speed (feet per minute) and the number of defective parts.
(c) Use the least squares method to develop the estimated regression equation.
(d) Predict the number of defective parts found for a line speed of 35 feet per minute.
Number of Defective Parts
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