A production process is sampled 24 times with a sample size of 6 yields, an overall...
A production process is sampled 24 times with a sample size of 6 yields, an overall mean of 25.2, and an average range of 0.8. Determine the control limits for the x-bar and R-charts.
Homework Answers
For the x-chart, A2 = 0.483; thus the control limits are
UCL = 25.2 + 0.483(0.8) = 25.5864
LCL = 25.2 - 0.483(0.8) = 24.8136
For the R-chart,
D4= 2.004; D3= 0;
the control limits are
UCL = D4*R-bar = 2.004(0.8) = 1.6032
LCL = D3*R-bar = 0
Add Answer to:
A production process is sampled 24 times with a sample size of 6 yields, an overall...
A production process sampled 24 times with a sample size of 6 yields an overall mean...
A production process sampled 24 times with a sample size of 6 yields an overall mean of 25.2 and an average range of 0.8. Calculate the lower control limit for the mean based on 3 standard deviations. a. 24.8 b. Cannot be determined with the information given c. 25.6 d. 25.1 e. 22.8
A process sampled 20 times with a sample of size 8 resulted in = 26.5 and...
A process sampled 20 times with a sample of size 8 resulted in = 26.5 and R = 1.6. Compute the upper and lower control limits for the x chart for this process. (Round your answers to two decimal places.) UCL = ____ LCL = ____ Compute the upper and lower control limits for the R chart for this process. (Round your answers to two decimal places.) UCL =____ LCL = ____
A process sampled 20 times with a sample of size 8 resulted in = 27.5and R =...
A process sampled 20 times with a sample of size 8 resulted in = 27.5and R = 1.8. Compute the upper and lower control limits for the x chart for this process. (Round your answers to two decimal places.) UCL= LCL= Compute the upper and lower control limits for the R chart for this process. (Round your answers to two decimal places.) UCL= LCL=
process sampled 20 times with a sample of size 8 resulted in 3 - 25.5 and...
process sampled 20 times with a sample of size 8 resulted in 3 - 25.5 and - 16 Comouce the upper and lower control limits for the chart for this process. (Round your answers to two decimal places.) UCL - L Compute the upper and lower control limits for the R chart for this process. (Round your answers to two decimal places.) UCL - LC
A Procter and Gamble factory process fills boxes with detergent. Construct an appropriate set of control...
A Procter and Gamble factory process fills boxes with detergent. Construct an appropriate set of control charts to monitor the process. Historical data for fill weight (in ounces) of eight samples is presented below. A sample size of six was used. Sample Sample Mean Sample Range 1 15.80 0.42 2 16.10 0.38 3 16.02 0.08 4 15.95 0.15 5 16.12 0.42 6 16.18 0.23 7 15.87 0.36 8 16.20 0.40 a. Compute the limits for both an R-chart and x-bar...
Problem no.3 The thickness of a metal part is the quality characteristic that statistical process control...
Problem no.3 The thickness of a metal part is the quality characteristic that statistical process control is being applied to. Measurements are taken from 25 subgroups of subgroup size 5. The sum of the X-bar values 1.5735. The sum of the R-values .0231. Xbar/R Chart for x 0636 06396 Subgroup 10 15 20 25 001 0011 a.) Calculate the trial control limits and centerlines for the X-bar and R charts above b.) Calculate the revised control limits and centerlines for...
8 have been gathered with the following results A services process is monitored using x-bar and...
8 have been gathered with the following results A services process is monitored using x-bar and R charts. Eight samples of n5 observations Sample 2 4 Mean 7.2 7.4 6.6 6.8 7.9 6.0 7.2 6.2 Range .43 .52 .53 20 .36 .42 .35 .42 7 8 Using this data, compute the centerline, the 3 sd upper control limit, and the lower control limits for the x-bar and R charts X-bar R-bar UCL r-bar LCL r-bar UCL x-bar LCL x-bar a....
An automatic lathe produces rollers for roller bearings, and the process is monitored by statistical process...
An automatic lathe produces rollers for roller bearings, and the process is monitored by statistical process control charts. The central line of the chart for the sample means is set at 8.40 and for the mean range at 0.3 mm. The process is in control, as established by samples of size 5. The upper and lower specifications for the diameter of the rollers are (8.40 + 0.25) and (8.40 -0.25) mm, respectively. Click the icon to view the table of...
Question pertains to the x-chart part Sample Mean Range 16 8 12 13 6 6 4...
Question pertains to the
x-chart part
Sample Mean Range 16 8 12 13 6 6 4 15 10 10 11 10 16 13 14 0 14 17 11 12 IU 12 12 11 13 14 12 7 8 13 9 11 14 7 13 15 10 15 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results oblained: Sample Mean Range 16 9 17 12...
Temperature is used to measure the output of a production process. When the process is in...
Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is μ = 126.5 and the standard deviation is σ = 0.4. (a)Compute the upper and lower control limits if samples of size 6 are to be used. (Round your answers to two decimal places.) UCL= LCL= Construct the x bar chart for this process. (b) Consider a sample providing the following data. 126.8 126.2 127.1 126.7 126.4...
process sampled 20 times with a sample of size 8 resulted in 3 - 25.5 and - 16 Comouce the upper and lower control limits for the chart for this process. (Round your answers to two decimal places.) UCL - L Compute the upper and lower control limits for the R chart for this process. (Round your answers to two decimal places.) UCL - LC
Problem no.3 The thickness of a metal part is the quality characteristic that statistical process control is being applied to. Measurements are taken from 25 subgroups of subgroup size 5. The sum of the X-bar values 1.5735. The sum of the R-values .0231. Xbar/R Chart for x 0636 06396 Subgroup 10 15 20 25 001 0011 a.) Calculate the trial control limits and centerlines for the X-bar and R charts above b.) Calculate the revised control limits and centerlines for...
8 have been gathered with the following results A services process is monitored using x-bar and R charts. Eight samples of n5 observations Sample 2 4 Mean 7.2 7.4 6.6 6.8 7.9 6.0 7.2 6.2 Range .43 .52 .53 20 .36 .42 .35 .42 7 8 Using this data, compute the centerline, the 3 sd upper control limit, and the lower control limits for the x-bar and R charts X-bar R-bar UCL r-bar LCL r-bar UCL x-bar LCL x-bar a....
An automatic lathe produces rollers for roller bearings, and the process is monitored by statistical process control charts. The central line of the chart for the sample means is set at 8.40 and for the mean range at 0.3 mm. The process is in control, as established by samples of size 5. The upper and lower specifications for the diameter of the rollers are (8.40 + 0.25) and (8.40 -0.25) mm, respectively. Click the icon to view the table of...
Question pertains to the
x-chart part
Sample Mean Range 16 8 12 13 6 6 4 15 10 10 11 10 16 13 14 0 14 17 11 12 IU 12 12 11 13 14 12 7 8 13 9 11 14 7 13 15 10 15 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results oblained: Sample Mean Range 16 9 17 12...
Most questions answered within 3 hours.
-
For the reaction 1N2+3H2-----> 2NH3, would the reaction rate
trend be: delta[NH3]/ delta t = -2...
asked 11 minutes ago -
A sock stuck to the side of a clothes-dryer barrel has a
centripetal acceleration of 24...
asked 59 minutes ago -
A perfect gas undergoes an isentropic process such that its
volume doubles. If the ratio of...
asked 1 hour ago -
list the elements in groups 3A to 6A in the same order as in the
periodic...
asked 1 hour ago -
Estimating effect size. Peng and Chen (2014)
evaluated effect size estimates for various tests. In their...
asked 1 hour ago -
Write a script in MySQL that creates and calls a stored
procedure name test. This procedure...
asked 1 hour ago -
If we test the following: H0: μ = 17
vs. H1: μ ≠ 17 and the...
asked 1 hour ago -
in the past year TVG had revenues of 3 million, cost
of goods sold of $25...
asked 1 hour ago -
4) In a polypeptide, which bond cannot rotate because of its
partial double bond character?
The...
asked 2 hours ago -
Assume that in the short run L = 1,000 and K = 100. 1. What is...
asked 2 hours ago -
At a given temperature, 2.06 atm of H2 and 3.7 atm of Br2 are
mixed and...
asked 2 hours ago -
Sodium reacts with Hydrochloric acid to form sodium chloride and
hydrogen gas. 2Na(s)+ 2 HCl(aq)-> 2...
asked 2 hours ago