The billing department at a local hospital wants to improve its performance. After surveying its patients, they realized the main complaint was about billing errors. The management went back and reviewed their last year's bills. They took about 100 bills for each week of each month and checked for errors. See Excel file for data. Answer. a. Does the month of the year have an effect on the billing errors? b. What type of control chart would you should use? c. Is the billing process under statistical control? Use Minitab to support your answers.
The billing department at a local hospital wants to improve its performance. After surveying its patients, they realized the main complaint was about billing errors. The management went back and reviewed their last year's bills. They took about 100 bills for each week of each month and checked for errors. See Excel file for data. Answer. a. Does the month of the year have an effect on the billing errors? b. What type of control chart would you should use? c. Is the billing process under statistical control? Use Minitab to support your answers.
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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The billing department at a local hospital wants to improve its performance. After surveying its patients, they realized the main complaint was about billing errors. The management went back and reviewed their last year's bills. They took about 100 bills for each week of each month and checked for errors. See Excel file for data. Answer. a. Does the month of the year have an effect on the billing errors? b. What type of control chart would you should use? c. Is the billing process under statistical control? Use Minitab to support your answers.
Transcribed Image Text:Month
O
3
4
5
6
8
29
30
1
1
1
2
2
2
IN
2
3
555UA A A Www
3
4
4
6
6
6
677 AN
7
Number of bills
reviewed
102
102
103
99
99
99
107
108
101
97
98
101
98
103
106
97
109
110
95
108
95
100
99
102
95
97
107
109
Number of billing
errors
2
4
3
1
1
1
5
0
11
1
2
4
3
NOO AO --NW WOW-NWW
3
2
1
0
3
3
2
0
4
0
0
2
DO CO CO
8
8
8
DO
8
9
9
9
9
10
10
10
10
11
LD
12
12
12
105
95
99
110
99
100
100
98
99
98
96
100
95
101
105
102
100
109
99
98
3
1
0
3
1
0
3
2
IN
2
4
D
1
-NNOM-3
1
2
0
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Step 1: Write the given information.
VIEWStep 2: Determine whether month of the year have an effect on the billing errors.
VIEWStep 3: Determine the type of control chart to be used for given data set.
VIEWStep 4: Compute the proportion, overall proportion, standard deviation and control limits for the p-chart.
VIEWStep 5: Check whether billing process is under statistical control or not.
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