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PROBLEM 1: Consider two manufacturing processes for production of malleable iron castings, and the mean and...
In-Class Exercise - Cpk Problem Design specifications require that a key dimension on a product measure...
In-Class Exercise - Cpk Problem Design specifications require that a key dimension on a product measure 110 + 13 units. A process being considered for producing this product has with a mean of 110 units and a standard deviation of four units. a. What can you say (quantitatively) regarding the process capability? b. Suppose the process average shifts to 98 units. Calculate the new process capability. c. What can you say about the process after the shift? Approximately what percentage...
The Acme Company manufactures large capacity Flash drives using two different manufacturing processes. The company is...
The Acme Company manufactures large capacity Flash drives using two different manufacturing processes. The company is interested in determining if there is a significant difference in the average manufacturing time of the two processes. For Process #1, a sample of 28 items shows a sample mean of 9 minutes and a sample standard deviation of 3.5 minutes. For Process #2, a sample of 23 items shows a sample mean of 13 minutes and a sample standard deviation of 4.5 minutes....
Zip, Inc. manufactures Zip drives on two different manufacturing processes. Because the management of this company...
Zip, Inc. manufactures Zip drives on two different manufacturing processes. Because the management of this company is interested in determining if process 1 takes less manufacturing time, they selected independent random samples from each process. The results of the samples are shown below. Process 1 Process 2 Sample size, n 12 22 Sample mean (in minutes) 58 64 sample standard deviation, s 9 25 a. State the null and alternative hypotheses. b. Determine the degrees of freedom for the...
Zip, Inc. manufactures Zip drives on two different manufacturing processes. Because the management of this company...
Zip, Inc. manufactures Zip drives on two different manufacturing processes. Because the management of this company is interested in determining if process 1 takes less manufacturing time, they selected independent random samples from each process. The results of the samples are shown below. Process 1 Process 2 Sample size, n 12 22 Sample mean (in minutes) 58 64 sample standard deviation, s 9 25 a. State the null and alternative hypotheses. b. Determine the degrees of freedom for the t...
Ozman Manufacturing Co.'s (OMI) new production process yields normally distributed process with daily mean 700 units...
Ozman Manufacturing Co.'s (OMI) new production process yields normally distributed process with daily mean 700 units and standard deviation 50 units. If OMI bids 650 units as their minimum to be delivered every day, how often should OMI expect to default in delivering their minimum bid? .34 .16 .20 .12
Question 1 (30 points You are required to state and describe which manufacturing processes to use...
Question 1 (30 points You are required to state and describe which manufacturing processes to use for the manufacture of the shown part. This may include more than one manufacturing process (primary step and then one or more secondary steps). Study the shape carefully and consider all acceptable options to achieve the final shape given. The part is made of a brass alloy and its largest diameter is 30 cm, with a weight of 17 kg. Suu A. [10 marks]...
QUESTION 25 (10 points) ‐ Process Capability Indexes A ball bearing design for wheel assemblies used...
QUESTION 25 (10 points) ‐ Process Capability Indexes A ball bearing design for wheel assemblies used in giant mining dump trucks requires the inner diameter to have a lower specification unit (LSL) of 1,097.50 mm and an upper specification unit (USL) of 1,102.50 mm. A simple random sample of 270 finished ball bearings, which were produced by an approximately normally distributed process, has the sample average of 1101.20 mm and the sample standard deviation of 0.60 mm. A too small...
QUESTION 25 (10 points) Process Capability Indexes A ball bearing design for wheel assemblies used in...
QUESTION 25 (10 points) Process Capability Indexes A ball bearing design for wheel assemblies used in giant mining dump trucks requires the inner diameter to have a lower specification unit (LSL) of 1,097.50 mm and an upper specification unit (USL) of 1,102.50 mm. A simple random sample of 270 finished ball bearings, which were produced by an approximately normally distributed process, has the sample average of 1101.20 mm and the sample standard deviation of 0.60 mm. A too small inner...
(5 noints):Q1: Tensile strength tests were performed on two different grades of aluminum spars used in commercial a...
(5 noints):Q1: Tensile strength tests were performed on two different grades of aluminum spars used in commercial aircraft. From past experience with spar manufacturing process, the standard deviation of tensile strengths are assumed to be known. The data obtained are shown in table below. Find the 90% confidence interval on the difference in mean strength 1H2 Spar Sample Sample Mean Tensile Standard Deviation Grade size Strength (kg/mm) (kg/mm2) -87.6 n«10 ơ,-1.0 2 n2-12 o 1.5 74.5
(5 noints):Q1: Tensile strength...
Answer the following questions 1. A company manufacturing oil seals wants to establish -R control charts...
Answer the following questions 1. A company manufacturing oil seals wants to establish -R control charts on the process. There are 25 subgroups and number of observations are four on the internal diameter of the seal. The summary data (in mm) are as follows ŽE=123.Ša=1406 a) Find the control limits that should be used on the I-R control charts. b) Assume that the 25 subgroups samples plot in control on both charts. Estimate the process mean() and standard deviation )...
In-Class Exercise - Cpk Problem Design specifications require that a key dimension on a product measure 110 + 13 units. A process being considered for producing this product has with a mean of 110 units and a standard deviation of four units. a. What can you say (quantitatively) regarding the process capability? b. Suppose the process average shifts to 98 units. Calculate the new process capability. c. What can you say about the process after the shift? Approximately what percentage...
Zip, Inc. manufactures Zip drives on two different manufacturing processes. Because the management of this company is interested in determining if process 1 takes less manufacturing time, they selected independent random samples from each process. The results of the samples are shown below. Process 1 Process 2 Sample size, n 12 22 Sample mean (in minutes) 58 64 sample standard deviation, s 9 25 a. State the null and alternative hypotheses. b. Determine the degrees of freedom for the t...
Question 1 (30 points You are required to state and describe which manufacturing processes to use for the manufacture of the shown part. This may include more than one manufacturing process (primary step and then one or more secondary steps). Study the shape carefully and consider all acceptable options to achieve the final shape given. The part is made of a brass alloy and its largest diameter is 30 cm, with a weight of 17 kg. Suu A. [10 marks]...
QUESTION 25 (10 points) Process Capability Indexes A ball bearing design for wheel assemblies used in giant mining dump trucks requires the inner diameter to have a lower specification unit (LSL) of 1,097.50 mm and an upper specification unit (USL) of 1,102.50 mm. A simple random sample of 270 finished ball bearings, which were produced by an approximately normally distributed process, has the sample average of 1101.20 mm and the sample standard deviation of 0.60 mm. A too small inner...
(5 noints):Q1: Tensile strength tests were performed on two different grades of aluminum spars used in commercial aircraft. From past experience with spar manufacturing process, the standard deviation of tensile strengths are assumed to be known. The data obtained are shown in table below. Find the 90% confidence interval on the difference in mean strength 1H2 Spar Sample Sample Mean Tensile Standard Deviation Grade size Strength (kg/mm) (kg/mm2) -87.6 n«10 ơ,-1.0 2 n2-12 o 1.5 74.5
(5 noints):Q1: Tensile strength...
Answer the following questions 1. A company manufacturing oil seals wants to establish -R control charts on the process. There are 25 subgroups and number of observations are four on the internal diameter of the seal. The summary data (in mm) are as follows ŽE=123.Ša=1406 a) Find the control limits that should be used on the I-R control charts. b) Assume that the 25 subgroups samples plot in control on both charts. Estimate the process mean() and standard deviation )...
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