Using samples of 500credit card statements, an auditor found the following: Use Table-A. Sample 1 2...
Using samples of 500credit card statements, an auditor found the following: Use Table-A. Sample 1 2 3 4 Number with errors 5 3 6 9 a. What is the 3 sigma control limit for this process
Homework Answers
| Number of errors | Error proportion | ||
| 5 | 5/500 = 0.01 | ||
| 3 | 0.006 | ||
| 6 | 0.06 | ||
| 9 | 0.09 |
Mean of errors = Sum of error propotions / 4 = 0.0415
Std deviation of proportions = sqrt { Mean of proportion * (1- Mean of proportion}/n } = sqrt{ (0.0415) * (1-0.0415) / 500 } = 0.0087
Three sigma control process = Mean + / - Z*Std deviation
Z= 3
UCL = 0.0415 + 3*0.0087 = 0.676
LCL = 0.0415 - 3*0.0087 = 0.0154
Add Answer to:
Using samples of 500credit card statements, an auditor found the
following: Use Table-A. Sample 1 2...
Using samples of 200 credit card statements, an auditor found the following: Sample 1 2 3...
Using samples of 200 credit card statements, an auditor found the following: Sample 1 2 3 4 5 6 Number of errors 8 2 9 9 8 4 Determine the 3-sigma UPPER control limit using the data above.
Using samples of 200 credit card statements, an auditor found the following: Use Table-A. Sample Number...
Using samples of 200 credit card statements, an auditor found the following: Use Table-A. Sample Number with errors 1 4 2 1 3 6 4 12 a. Determine the fraction defective in each sample. (Round your answers to 4 decimal places.) Sample Fraction defective b. If the true fraction defective for this process is unknown, what is your estimate of it? (Enter your answer as a percentage rounded to 1 decimal place. Omit the "%" sign in your response.) Estimate...
Problem 4. Using samples of 200 credit card statements, an auditor found the following: Number with...
Problem 4. Using samples of 200 credit card statements, an auditor found the following: Number with errors 4 25 9 a. Determine the fraction defective in each sample. b. If the true fraction defective for this process is unknown, what is your estimate of it? e. What is your estimate of the mean and standard deviation of the sampling distribution of fractions defective for samples of this size? d. What control limits would give an alpha risk of 03 for...
1:28 vl En Exit LIIL Reu dilel you 11111511 dll Lile Yues LIUIIS. • Late submission...
1:28 vl En Exit LIIL Reu dilel you 11111511 dll Lile Yues LIUIIS. • Late submission will not be marked. • Students can see the correct answers in Canvas on 30th Mar 2020 and thereafter. Question 8 3 pts Using samples of 200 credit card statements, an auditor found the following: 2 3 4 5 6 Sample 1 Number of 6 errors 4 5 19 7 5 Determine the 3-sigma LOWER control limit using the data above. • Previous Submit...
Part 3 [35 Marks 3- The number of nonconforming switches in samples of size 75 are...
Part 3 [35 Marks 3- The number of nonconforming switches in samples of size 75 are shown in Table 3. [20 Marks] Table 3 Number of Nonconforming Assemblies Number of Sample Nonconforming Number Sample Number Assemblies 6 7 11 1 15 12 2 0 13 1 3 9 14 3 4 5 15 6 5 1 16 8 4 17 10 7 5 18 5 7 19 2 9 12 20 7 10 (a) Construct a fraction nonconforming control chart...
Where X-7nand z#2 Item Sample # 1 2 3 4 1 10.20 9.97 10.17 9.91 2...
Where X-7nand z#2 Item Sample # 1 2 3 4 1 10.20 9.97 10.17 9.91 2 9.82 10.33 10.32 10.26 3 9.79 10.23 10.20 10.03 4 10.35 10.09 10.21 10.32 5 9.98 9.78 9.99 9.90 6 9.79 10.12 10.21 10.16 71 10.30 10.13 | 10.16 | 10.20 8 9.83 10.16 9.96 10.21 9 10.30 10.01 9.83 9.91 1. 2. 3. 4. What is the value of the Upper Control Limit (UCL)? What is the value of the Lower Control Limit...
A company manufactures valves for industrial use. Ten samples of 15 valves each were taken from...
A company manufactures valves for industrial use. Ten samples of 15 valves each were taken from the production line and tested. The results are as follows SAMPLE NUMBER DEFECTIVES SAMPLE NUMBER DEFECTIVES 2 [6] 10 2 3 4 5 1 12] 0 [3] 0 [4] 0 [5] 6 7 8 3 [81 1 [9] 0 110] 10 a. Compute the fraction defectives for each sample. (3 decimal places0 b. Compute for the center line [a]. Upper Control Limit [b], Lower...
Question 4 [20 marks] By utilising Annexure A, answer the following questions: (a) 15 samples of...
Question 4 [20 marks] By utilising Annexure A, answer the following questions: (a) 15 samples of n 8 have been taken from a cleaning operation. The average sample range for the 20 samples was 0.016 minute, and the average mean was 3 minutes. Determine the three-sigma control limits for this process. (4 marks) (b) 15 samples of n 10 observations have been taken from a milling process. The average sample range is 0.01 centimetres. Determine upper and lower control limits...
Checkout time at a supermarket is monitored using a mean and a range chart. Six samples...
Checkout time at a supermarket is monitored using a mean and a range chart. Six samples of n = 20 observations have been obtained and the sample means and ranges computed: Sample Mean Range Sample Mean Range 1 3.06 .42 4 3.13 .46 2 3.15 .49 5 3.06 .46 3 3.11 .41 6 3.09 .45 Factors for three-sigma control limits for x¯x¯ and R charts FACTORS FOR R CHARTS Number of Observations in Subgroup, n Factor for x¯x¯ Chart, A2 Lower...
The table lists the number of defective 60-watt lightbulbs found in samples of 100 bulbs selected...
The table lists the number of defective 60-watt lightbulbs found in samples of 100 bulbs selected over 25 days from a manufacturing process. Assume that during this time the manufacturing process was not producing an excessively large fraction of defectives. Day 1 2 3 4 5 6 7 8 9 10 Defectives 5 3 6 9 3 4 4 6 6 2 Day 11 12 13 14 15 16 17 18 19 20 Defectives 3 4 3 4 1 3...
Using samples of 200 credit card statements, an auditor found the following: Use Table-A. Sample Number with errors 1 4 2 1 3 6 4 12 a. Determine the fraction defective in each sample. (Round your answers to 4 decimal places.) Sample Fraction defective b. If the true fraction defective for this process is unknown, what is your estimate of it? (Enter your answer as a percentage rounded to 1 decimal place. Omit the "%" sign in your response.) Estimate...
Problem 4. Using samples of 200 credit card statements, an auditor found the following: Number with errors 4 25 9 a. Determine the fraction defective in each sample. b. If the true fraction defective for this process is unknown, what is your estimate of it? e. What is your estimate of the mean and standard deviation of the sampling distribution of fractions defective for samples of this size? d. What control limits would give an alpha risk of 03 for...
1:28 vl En Exit LIIL Reu dilel you 11111511 dll Lile Yues LIUIIS. • Late submission will not be marked. • Students can see the correct answers in Canvas on 30th Mar 2020 and thereafter. Question 8 3 pts Using samples of 200 credit card statements, an auditor found the following: 2 3 4 5 6 Sample 1 Number of 6 errors 4 5 19 7 5 Determine the 3-sigma LOWER control limit using the data above. • Previous Submit...
Part 3 [35 Marks 3- The number of nonconforming switches in samples of size 75 are shown in Table 3. [20 Marks] Table 3 Number of Nonconforming Assemblies Number of Sample Nonconforming Number Sample Number Assemblies 6 7 11 1 15 12 2 0 13 1 3 9 14 3 4 5 15 6 5 1 16 8 4 17 10 7 5 18 5 7 19 2 9 12 20 7 10 (a) Construct a fraction nonconforming control chart...
Where X-7nand z#2 Item Sample # 1 2 3 4 1 10.20 9.97 10.17 9.91 2 9.82 10.33 10.32 10.26 3 9.79 10.23 10.20 10.03 4 10.35 10.09 10.21 10.32 5 9.98 9.78 9.99 9.90 6 9.79 10.12 10.21 10.16 71 10.30 10.13 | 10.16 | 10.20 8 9.83 10.16 9.96 10.21 9 10.30 10.01 9.83 9.91 1. 2. 3. 4. What is the value of the Upper Control Limit (UCL)? What is the value of the Lower Control Limit...
A company manufactures valves for industrial use. Ten samples of 15 valves each were taken from the production line and tested. The results are as follows SAMPLE NUMBER DEFECTIVES SAMPLE NUMBER DEFECTIVES 2 [6] 10 2 3 4 5 1 12] 0 [3] 0 [4] 0 [5] 6 7 8 3 [81 1 [9] 0 110] 10 a. Compute the fraction defectives for each sample. (3 decimal places0 b. Compute for the center line [a]. Upper Control Limit [b], Lower...
Question 4 [20 marks] By utilising Annexure A, answer the following questions: (a) 15 samples of n 8 have been taken from a cleaning operation. The average sample range for the 20 samples was 0.016 minute, and the average mean was 3 minutes. Determine the three-sigma control limits for this process. (4 marks) (b) 15 samples of n 10 observations have been taken from a milling process. The average sample range is 0.01 centimetres. Determine upper and lower control limits...
Most questions answered within 3 hours.
-
Effect of DCMU and sodium azide on Chlamydomonas? We did an
experiment where we had Chlamydomonas...
asked 23 minutes ago -
1a) According to the ideal gas law, _______________.
a. a gas has infinite volume at absolute...
asked 1 hour ago -
Oakdale Fashions, Inc. had $245,000 in 2018 taxable income.
Using the tax schedule in Table 2.3...
asked 2 hours ago -
The marketing class at CSUS had an average score of 150. An
educational analyst determined that...
asked 3 hours ago -
Justin Case has purchased a $250 000 home by putting 20 % down
and taking out...
asked 3 hours ago -
1. In a labor market, marginal cost for a firm is
____________.
a. recruiting cost
b....
asked 4 hours ago -
On January 1, 2019, ABC Company issued $60,000,000 of 20-year,
10.5% bonds when the market rate...
asked 4 hours ago -
39.4% of US homes continue to use a landline in addition to cell
phone service. 3...
asked 5 hours ago -
Starting with benzene, synthesize 1-phenyl-1-butyne.
Show intermediates and reagents.
asked 6 hours ago -
Create a 32-run crossed array design with six control factors
and two noise factors such that...
asked 7 hours ago -
A 500g sample of sand from source A has the following amounts
retained on each sieve....
asked 7 hours ago -
In
your own words, please explain the essay by John Keynes wrote "The
End of Laissez...
asked 7 hours ago