Problem 10-7 The postmaster of a small western town receives a certain number of complaints each...

Question

Question

Problem 10-7 The postmaster of a small western town receives a certain number of complaints each day about mail delivery. 1 4

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Answer a: UCLc= 13.946, LCLc= 2.482,

Answer b: The process is not in control: As we can see that sample 3 and sample 9 are beyond control limits in charts

Explanation:

C-Chart using z= 2
Mean, C=	AVERAGE(all defects)	8.214
Standard Dev (STD)=	sqrt (mean)	2.8661
UCL=	C + z*STD	13.946
LCL=	C - z*STD	2.482

C- Chart AN 1 2 3 6 8 10 12 13 14 4 5 defective 7 Mean 9 LCL 11 -UCL

Use the table below for the chart

sample	defective	Mean	LCL	UCL
1	4	8.21	2.48	13.95
2	10	8.21	2.48	13.95
3	15	8.21	2.48	13.95
4	8	8.21	2.48	13.95
5	9	8.21	2.48	13.95
6	6	8.21	2.48	13.95
7	5	8.21	2.48	13.95
8	13	8.21	2.48	13.95
9	15	8.21	2.48	13.95
10	7	8.21	2.48	13.95
11	6	8.21	2.48	13.95
12	4	8.21	2.48	13.95
13	2	8.21	2.48	13.95
14	11	8.21	2.48	13.95

Please ask, if you have any doubts through the comment section. Do rate the answer

Add a comment

Answer 2

Similar Homework Help Questions

Problem 10-7 The postmaster of a small western town receives a certain number of complaints each...

Problem 10-7 The postmaster of a small western town receives a certain number of complaints each day about mail delivery. 1 4 2 10 3 15 4 8 5 9 6 6 7 5 DAY 8 13 9 15 10 7 11 6 Number of complaints a.Determine two-sigma control limits using the above data. (Round your intermediate calculations to 4 decimal places and final answers to 3 decimal places. Leave no cells blank - be certain to enter "0" wherever...
Problem 10-7 The postmaster of a small western town receives a certain number of complaints each...

Problem 10-7 The postmaster of a small western town receives a certain number of complaints each day about mail delivery. 6 1 4 Number of complaints 2 10 3 14 4 8 5 9 DAY 8 13 7 5 9 13 10 7 11 6 12 4 13 2 14 9 6 a.Determine three-sigma control limits using the above data. (Round your intermediate calculations to 4 decimal places and final answers to 3 decimal places. Leave no cells blank -...
Problem 10-7 The postmaster of a small western town receives a certain number of complaints each...

Problem 10-7 The postmaster of a small western town receives a certain number of complaints each day about mail delivery DAY 7 89 10 11 12 13 14 5 13 15 1 2 3 4 5 7 6 4 2 10 8 6 4 11 14 Number of complaints a. Determine two-sigma control limits using the above data. (Round your intermediate calculations to 4 decimal places and final answers to 3 decimal places. Leave no cells blank be certain to...

The postmaster of a small western town receives a certain number of complaints each day about...

The postmaster of a small western town receives a certain number of complaints each day about mail delivery. 2 1 4 Number of complaints 3 14 4 8 5 9 6 6 DAY 8 13 7 5 9 14 10 7 11 6 12 4 13 2 14 11 11 a.Determine two-sigma control limits using the above data. (Round your intermediate calculations to 4 decimal places and final answers to 3 decimal places. Leave no cells blank - be certain...
uiz - Quality Control Saved Submit Help Save & Exit The postmaster of a small western...

uiz - Quality Control Saved Submit Help Save & Exit The postmaster of a small western town receives a certain number of complaints each day about mail delivery. DAY 2 4 7 10 11 12 13 14 6 Number of complaints 4 10 10 16 9 6 5 14 13 7 4 2 a.Determine three-sigma control limits using the above data. (Round your intermediate calculations to 4 decimal places and final answers to 3 decimal places. Leave no cells blank...
2. The postmaster of a small western city receives a certain number of complaints each day about mail delivery. Construct a control chart with three sigma limits using the following data. Is the process in control? SAMPLE 1 2 3 4 5 6 7 8 9 10 11 12 13

1. The postmaster of a small western city receives a certain number of complaints each dayabout mail delivery. Construct a control chart with three sigma limits using the following data. Is the process in control? SAMPLE1234567891011121314Number of complaints4101489651213764210

Problem 10-25 Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is...

Problem 10-25 Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13 To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER 1 2 3...
kon over the past 10 days are given below. Sample size is 100. Day Defectives 1...

kon over the past 10 days are given below. Sample size is 100. Day Defectives 1 7 2 9 3 9 4 11 5 7 6 8 7 0 8 11 9 13 10 2 a) The upper and lower 3-sigma control chart limits are: UCL, -(enter your response as a number between 0 and 1, rounded to three decimal places). LCL - Center your response as a number between 0 and 1, rounded to three decimal plocos). b) Given...
5. A hospital manager receives a certain number of complaints each day about the hospitals service....

5. A hospital manager receives a certain number of complaints each day about the hospitals service. Complaints for 20 days are given in the Table 5 shown below. [10 Marks] s aiqel Day Number of Complaints Number of Complaints Day I IT 7 ET ST 8 9T LT 6T 8T 8T 6 61 OT (a what are the initial control limits? Based on the control chart limits calculated, does the (6 Marks] process exhibit statistical control? (b) If not, which...

Five data entry operators work at the data processing department of the Birmingham Bank. Each day...

Five data entry operators work at the data processing department of the Birmingham Bank. Each day for 30 days, the number of defective records in a sample of 300 records typed by these operators has been noted. as follows: Sample No 1 No. Defectives Sample No. 11 12 13 No Defectives 5 2 No. Defectives 16 11 7 7 3 Sample No. 21 22 23 24 25 26 27 18 11 11 7 11 10 5 13 5 6 7...

Problem 10-7 The postmaster of a small western town receives a certain number of complaints each...

Homework Answers