The stated goal of a chain of service stores is to provide a lube and oil change for anyone's automobile in 15 minutes. The manager at one store thinks that there is a growing disparity among his workers in the time it takes to lube and change the oil of an automobile. To monitor this, the manager has selected a sample of 20 days and has recorded the time it took to service 100 automobiles each day. Data about the number of times the service was performed in 15 minutes or less (515) are found below. Complete parts a through c Click the icon to view the data. a. Compute p and sp p-(Round to four decimal places as needed.) Sp (Round to four decimal places as needed) b. Construct a p-chart and determine if the process of the time required for oil and lube jobs is in control Which graph below shows a p-chart for the data? O A. OB. Am 0.05 -ww Is the process in control? OA. Since 10 points in a row are below the centerline, followed by 10 points above, conclude that the process is out of control. OB. Since there are more than 6 consecutive points increasing, conclude that the process is out of control. OC. Since there are no signals to indicate that something has changed, conclude that the process is in control. OD. Since there is at least one point outside the control limits, conclude that the process is out of control OE. Since more than 14 points in a row alternate up and down, conclude that the process is out of control. c. Specify the signals that are used to indicate an out-of-control situation on a p-chart. Select all that apply. A. One or more points outside the upper or lower control limits B. Nine or more points in a row above (or below) the centerline C. Six or more consecutive points moving in the same direction (increasing or decreasing) D. Eight points in a row altemating above and below the centerline E. Fourteen points in a row alternating up and down OC. www Data Number of Cars Serviced in 15 Day Minutes or Less 84 87 84 90 86 86 87 11 91 12 89 13 14 86 15 88 17 18 19 20 OD. 085- www
The stated goal of a chain of service stores is to provide a lube and oil change for anyone's automobile in 15 minutes. The manager at one store thinks that there is a growing disparity among his workers in the time it takes to lube and change the oil of an automobile. To monitor this, the manager has selected a sample of 20 days and has recorded the time it took to service 100 automobiles each day. Data about the number of times the service was performed in 15 minutes or less (515) are found below. Complete parts a through c Click the icon to view the data. a. Compute p and sp p-(Round to four decimal places as needed.) Sp (Round to four decimal places as needed) b. Construct a p-chart and determine if the process of the time required for oil and lube jobs is in control Which graph below shows a p-chart for the data? O A. OB. Am 0.05 -ww Is the process in control? OA. Since 10 points in a row are below the centerline, followed by 10 points above, conclude that the process is out of control. OB. Since there are more than 6 consecutive points increasing, conclude that the process is out of control. OC. Since there are no signals to indicate that something has changed, conclude that the process is in control. OD. Since there is at least one point outside the control limits, conclude that the process is out of control OE. Since more than 14 points in a row alternate up and down, conclude that the process is out of control. c. Specify the signals that are used to indicate an out-of-control situation on a p-chart. Select all that apply. A. One or more points outside the upper or lower control limits B. Nine or more points in a row above (or below) the centerline C. Six or more consecutive points moving in the same direction (increasing or decreasing) D. Eight points in a row altemating above and below the centerline E. Fourteen points in a row alternating up and down OC. www Data Number of Cars Serviced in 15 Day Minutes or Less 84 87 84 90 86 86 87 11 91 12 89 13 14 86 15 88 17 18 19 20 OD. 085- www
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:The stated goal of a chain of service stores is to provide a lube and oil change for anyone's automobile in 15 minutes. The manager at one store thinks that there is a growing disparity among his workers in the time it takes to lube and change the oil of an automobile. To monitor this, the manager has selected a sample of 20 days and has recorded the time it took to service 100
automobiles each day. Data about the number of times the service was performed in 15 minutes or less (515) are found below. Complete parts a through c
Click the icon to view the data.
a. Compute p and sp
p-(Round to four decimal places as needed.)
Sp
(Round to four decimal places as needed)
b. Construct a p-chart and determine if the process of the time required for oil and lube jobs is in control
Which graph below shows a p-chart for the data?
O A.
OB.
Am
0.05
-ww
Is the process in control?
OA. Since 10 points in a row are below the centerline, followed by 10 points above, conclude that the process is out of control.
OB. Since there are more than 6 consecutive points increasing, conclude that the process is out of control.
OC. Since there are no signals to indicate that something has changed, conclude that the process is in control.
OD. Since there is at least one point outside the control limits, conclude that the process is out of control
OE. Since more than 14 points in a row alternate up and down, conclude that the process is out of control.
c. Specify the signals that are used to indicate an out-of-control situation on a p-chart. Select all that apply.
A. One or more points outside the upper or lower control limits
B. Nine or more points in a row above (or below) the centerline
C. Six or more consecutive points moving in the same direction (increasing or decreasing)
D. Eight points in a row altemating above and below the centerline
E. Fourteen points in a row alternating up and down
OC.
www
Data
Number of Cars Serviced in 15
Day
Minutes or Less
84
87
84
90
86
86
87
11
91
12
89
13
14
86
15
88
17
18
19
20
OD.
085-
www
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