Homework Help is Here – Start Your Trial Now!
Math
Statistics
A local bank wants to study waiting times of customers. A subgroup of four customers is selected, and the time is measured from the point each customer enters the line to when he or she reaches the teller window. The results are shown in the data table. (a) Construct control charts for the range and the mean. (b) Is the process in control?

A local bank wants to study waiting times of customers. A subgroup of four customers is selected, and the time is measured from the point each customer enters the line to when he or she reaches the teller window. The results are shown in the data table. (a) Construct control charts for the range and the mean. (b) Is the process in control?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

Data Analysis

 

Day    Time 1    Time 2    Time 3    Time 4
1    7.2    9.2    9.4    9.5
2    5.4    8.8    3.1    4.4
3    5.7    8.7    3.4    5.5
4    3.5    7.7    5.4    7.4
5    9.8    4.5    4.6    5.9
6    8.9    9.8    9.8    6.3
7    5.2    6.4    5.1    5.5
8    8.7    5.3    8.7    6.6
9    5.8    4.7    4.1    4.6
10    3.9    3.9    3.9    4.9
11    2.5    3.8    2.5    4.7
12    4.7    1.9    6.7    1.4
13    6.1    7.7    8.4    8.8
14    7.1    6.3    8.3    5.7
15    7.3    5.6    6.9    6.7
16    6.7    7.1    7.1    9.4
17    5.5    6.4    3.4    5.3
18    4.8    5.1    1.2    9.2
19    7.4    7.8    4.2    5.6
20    6.2    4.5    7.2    6.2

Day Time 1 Time 2 Time 3 Time 4 1 7.2 9.2 9.4 9.5 2 5.4 8.8 3.1 4.4 3 5.7 8.7 3.4 5.5 3.5 7.7 5.4 7.4 9.8 4.5 4.6 5.9 6. 8.9 9.8 9.8 6.3 7 5.2 6.4 5.1 5.5 8.7 5.3 8.7 6.6 5.8 4.7 4.1 4.6 10 3.9 3.9 3.9 4.9 11 2.5 3.8 2.5 4.7 12 4.7 1.9 6.7 1.4 13 6.1 7.7 8.4 8.8 14 7.1 6.3 8.3 5.7 15 7.3 5.6 6.9 6.7 16 6.7 7.1 7.1 9.4 17 5.5 6.4 3.4 5.3 |18 4.8 5.1 1.2 9.2 19 7.4 7.8 4.2 5.6 20 6.2 4.5 7.2 6.2
Transcribed Image Text:Day Time 1 Time 2 Time 3 Time 4 1 7.2 9.2 9.4 9.5 2 5.4 8.8 3.1 4.4 3 5.7 8.7 3.4 5.5 3.5 7.7 5.4 7.4 9.8 4.5 4.6 5.9 6. 8.9 9.8 9.8 6.3 7 5.2 6.4 5.1 5.5 8.7 5.3 8.7 6.6 5.8 4.7 4.1 4.6 10 3.9 3.9 3.9 4.9 11 2.5 3.8 2.5 4.7 12 4.7 1.9 6.7 1.4 13 6.1 7.7 8.4 8.8 14 7.1 6.3 8.3 5.7 15 7.3 5.6 6.9 6.7 16 6.7 7.1 7.1 9.4 17 5.5 6.4 3.4 5.3 |18 4.8 5.1 1.2 9.2 19 7.4 7.8 4.2 5.6 20 6.2 4.5 7.2 6.2
A local bank wants to study waiting times of customers. A subgroup of four customers is selected, and the time is measured from the point each customer enters the line to when he or she reaches the teller window. The results are shown in the data table. (a) Construct control charts for the range and the mean. (b) Is the process in control? Click the icon to view the data. (a) Construct a control chart for the range. Choose the correct graph below. O A. O B. Oc. O D. UCL 8- UCL 8- LCL 20 0- 0- 0- 0- 20 20 20 Construct a control chart for the mean. Choose the correct graph below. OA. O B. Oc. OD. 10- 10- 10- 10- UCL --UCL wwww. UCL UCL ELCL ELCL 0- 0- 0- 0- 20 20 20 20 (b) Is the process in control? A. No, because there is an obvious pattern in the R chart O B. No, because there is at least one point on both charts that lies outside the control limits O C. No, because there is at least one point on the R chart that lies outside the control limits D. Yes, because no points lie outside the control limits and there are no obvious patterns on either chart
Transcribed Image Text:A local bank wants to study waiting times of customers. A subgroup of four customers is selected, and the time is measured from the point each customer enters the line to when he or she reaches the teller window. The results are shown in the data table. (a) Construct control charts for the range and the mean. (b) Is the process in control? Click the icon to view the data. (a) Construct a control chart for the range. Choose the correct graph below. O A. O B. Oc. O D. UCL 8- UCL 8- LCL 20 0- 0- 0- 0- 20 20 20 Construct a control chart for the mean. Choose the correct graph below. OA. O B. Oc. OD. 10- 10- 10- 10- UCL --UCL wwww. UCL UCL ELCL ELCL 0- 0- 0- 0- 20 20 20 20 (b) Is the process in control? A. No, because there is an obvious pattern in the R chart O B. No, because there is at least one point on both charts that lies outside the control limits O C. No, because there is at least one point on the R chart that lies outside the control limits D. Yes, because no points lie outside the control limits and there are no obvious patterns on either chart
Expert Solution
steps

Step by step

Solved in 5 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS