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A) (4 marks) Determine the value of p bar, the mean fraction defective. Then determine the control limits for the p-chart using a 99.73% confidence level (three standard deviations). Is this process in control? If not, which sample(s) was/were out of control?
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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...
I need answers to E - H please. Table A Areas under the normal curve, 0 to z 01 Z 00 15 19 Use Table-A 3 4 2 Sample...
I need answers to E - H please.
Table A Areas under the normal curve, 0 to z 01 Z 00 15 19 Use Table-A 3 4 2 Sample Number with errors 7 5 4 a. Determine the fraction defective in each sample. (Round your answers to 4 decimal p Fraction defectve Sample 0.0253 1 0.0202 2 0.0354 3 0.0404 4 b.lf the true fraction defective for this process is unknown, what is your estimate of it? (Ro the "%"...
A company that makes car parts. The company control its production process by periodically taking a...
A company that makes car parts. The company control its production process by periodically taking a sample of 100 units from the production line. Each product is inspected for defective features. Control limits are developed using three standard deviations from the mean as the limit. During the last 12 samples taken, the proportion of defective items per sample was recorded as follows: 0.01 0.01 0.0 0.04 0.01 0.01 0.00 0.01 0.02 0.02 0.03 0.03 a. Determine the mean proportion defective,...
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...
thanks! :) Formulas for Questions 24-27 Upper control in. UCL= 1 + 20 Lower control it....
thanks! :)
Formulas for Questions 24-27 Upper control in. UCL= 1 + 20 Lower control it. LCL - P - 20% where p mean traction detective in the sample 2 of normal standard deviations for 99.73%) standard deviation of the sampling distribution /P(1-P) size of each sample size of each sample Table 2. A manufacturer of precision machine parts produces a specialty bracket. They inspected random samples with 70 brackets per sample a total of 600 brackets and checked each...
Table A Areas under the normal curve, 0 to z 03 Z 00 0080 0120 01 0478 0517 15 16 19 o00 DI 02 E# e.What a...
Table A Areas under the normal curve, 0 to z 03 Z 00 0080 0120 01 0478 0517 15 16 19 o00 DI 02 E# e.What alpha risk would control limits of .0470 and .0136 provide? (Round your intermediate calculations to 4 decimal places. Round your "z" value to 2 decimal places and "alpha risk" value to 4 decimal places.) 1, alpha risk z= fUsing control limits of .0470 and .0136, is the process in control? ook Oyes rint Ono...
need help with E-H please Areas under the normal curve, O to z Table A 07 05 08 03 FA ES % & 2 コ 3a2コ 00 3a8...
need help with E-H please
Areas under the normal curve, O to z Table A 07 05 08 03 FA ES % & 2 コ 3a2コ 00 3a833 3333 22p Using samples of 198 credit card statements, an auditor found the following: Use Table-A Banple Number with errora 1 4 4 7 a. Determine the fraction defective in each sample. (Round your answers to 4 decimal places.) Sample Fraction defective 00251 2 002021 00354 b.lf the true fraction defective for...
The management of the Diners Delight restaurant chain is in the process of establishing quality control...
The management of the Diners Delight restaurant chain is in the process of establishing quality control charts for the time that its service people give to each customer. Management thinks the length of time that each customer is given should remain within certain limits to enhance service quality. For simplicity, the data from three samples are displayed below. In each sample, four service people were randomly selected, and the customer service they provided was observed. The time (in seconds) to...
The management of the Diners Delight restaurant chain is in the process of establishing quality control...
The management of the Diners Delight restaurant chain is in the process of establishing quality control charts for the time that its service people give to each customer. Management thinks the length of time that each customer is given should remain within certain limits to enhance service quality. For simplicity, the data from three samples are displayed below. In each sample, four service people were randomly selected, and the customer service they provided was observed. The time (in seconds) to...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of defectives in each are shown in the following table: Sample n number of defective items in the sample 1 15 1 2 15 1 3 15 1 4 15 0 5 15 2 6 15 3 7 15 1 8 15 0 9 15 2 10 15 1 a. Determine the p, Sp, UCL and LCL...
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...
I need answers to E - H please.
Table A Areas under the normal curve, 0 to z 01 Z 00 15 19 Use Table-A 3 4 2 Sample Number with errors 7 5 4 a. Determine the fraction defective in each sample. (Round your answers to 4 decimal p Fraction defectve Sample 0.0253 1 0.0202 2 0.0354 3 0.0404 4 b.lf the true fraction defective for this process is unknown, what is your estimate of it? (Ro the "%"...
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...
thanks! :)
Formulas for Questions 24-27 Upper control in. UCL= 1 + 20 Lower control it. LCL - P - 20% where p mean traction detective in the sample 2 of normal standard deviations for 99.73%) standard deviation of the sampling distribution /P(1-P) size of each sample size of each sample Table 2. A manufacturer of precision machine parts produces a specialty bracket. They inspected random samples with 70 brackets per sample a total of 600 brackets and checked each...
Table A Areas under the normal curve, 0 to z 03 Z 00 0080 0120 01 0478 0517 15 16 19 o00 DI 02 E# e.What alpha risk would control limits of .0470 and .0136 provide? (Round your intermediate calculations to 4 decimal places. Round your "z" value to 2 decimal places and "alpha risk" value to 4 decimal places.) 1, alpha risk z= fUsing control limits of .0470 and .0136, is the process in control? ook Oyes rint Ono...
need help with E-H please
Areas under the normal curve, O to z Table A 07 05 08 03 FA ES % & 2 コ 3a2コ 00 3a833 3333 22p Using samples of 198 credit card statements, an auditor found the following: Use Table-A Banple Number with errora 1 4 4 7 a. Determine the fraction defective in each sample. (Round your answers to 4 decimal places.) Sample Fraction defective 00251 2 002021 00354 b.lf the true fraction defective for...
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