Q1: choose the correct answer:
- 6σ < C_p means that the process is capable regardless if it is centered or not?
A) Yes
B) No
- Data are usually discrete and in the form of counts are called variables.
A) Yes
B) No
- The control chart is an _____________ process monitoring technique widely used to eliminate process variability
A) on-line
B) off-line
C) both a and b
D) out of control
- C control chart is used with a variable sample size of attributes data.
A) Yes
B) No
- P(bar) is the measure of process capability, which is the average proportion defective produced by the process when it is operating in statistical control.
A) Yes
B) No
- The x(bar) chart monitors the variability within samples.
A) Yes
B) No
- If Cp < Cpk, the process is centered at the midpoint of the specifications.
A) Yes
B) No
- C_p is a measure of the potential capability of a process while C_pk is the measure of the actual capability of that process.
A) Yes
B) No
- Which of the following process capability ratios takes process centering into account?
A) Cp
B) Cpu
C) Cpl
D) Cpk
Q1: choose the correct answer: - 6σ < C_p means that the process is capable regardless...
6) For the process to be capable of meeting design specifications the process capability index must be a- less than one (1.0) b- greater than one (1.0) c less than zero (0.0) d- greater than zero (0.0) 7) We are monitoring a process that has an outcome that is normally distributed with a mean of 100 and a standard deviation of 10. We would use a (n)----- -- to evaluate whether this process's average is remaining in control. a- x-bar...
1.)Ready Care is currently using SPC as a means for investigating its process. However, they want to determine if they are currently aligned with customer expectations. The marketing team has determined that customers expect some sort of a wait and are not likely to complain if the wait does not exceed 35 minutes. Operations has determined that the process mean is 25.25 and the standard deviation of the process is 2.5. Knowing this, what is the capability ratio (Cp) for...
A certain process is under statistical control and has a mean value of 130 and a standard deviation of 8. The specifications for the process are: a. USL (upper specification limit) = 150 b. LSL(lower specification limit) =100 a. Calculate the cp and cpk b. Which of these indices is a better measure of process capability and why? c. Assuminng a normal distribution what percentage of output is expected to fall ourside the specification. Why is it important to know...
Inc., is conducting a study to assess the capability of its
150-gram bar soap production line. A critical quality measure is
the weight of the soap bars after sampling. The lower and upper
specification limits are 162 and 170 grams, respectively. As a part
of an initial capability study, 25 samples of size 5 were collected
by the quality assurance group and the observations in Table given
were recorded.
After analyzing the data by using statistical control charts,
the T’Challa’s...
Process Capablity Sixpack Report for Suppa 1. The process for supplier 2 is operaing under a. Common cause b Special cause c Both common and special cause d Neither special or common cause 2. Wthin variation is basicaly a. An estimate of the shor-tem varation caloulating an average range b. An estimate of the long-lerm varation An estimate of the shor-em varaion caloulating an estimate for the standard deviation based on ranges of the samples d. An estimate of the...
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 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...
1 - Almost all processes, regardless on whether they are goods or services, exhibit some type of variation in their output. For example, a box of cereal may say that it contains 16 ounces, but in reality, it may be a little bit more, or a little bit less. The machine pouring the cereal into the box may not be adjusted properly, and it may only put 15.8 ounces in each box, on the average. This would be considered an...
The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen samples of five completed mortgage transactions each were taken during a period when the process was believed to be in control. The times to complete the transactions were measured. The Money Pit Mortgage Company made some changes to the process and undertook a process capability study. The following data were obtained for 15 samples of size 5. Based on the individual observations, management estimated...
Control Chart Chocolate Viscosity 570 540 530 520 10 Subgroup # Control Chart-Chocolate Viscosity 50 s45 40 35 25 20 15 10 10 15 20 25 Subgroup # 11. An operator working at a company that makes chocolate syrup rocorded the ollowing d on the syrup viscosity, using subgroups.of.10samples Answer the following questions 114 marks subgroupl average (cl) s (cP) 534 545 561 576 523 571 547 584 552 541 545 27 25 23 24 28 10 12 13 26...