|
Aspen Plastics produces plastic bottles to customer order. The quality inspector randomly selects four bottles from the bottle machine and measures the outside diameter of the bottle? neck, a critical quality dimension that determines whether the bottle cap will fit properly. The dimensions? (in.) from the last six samples are |
Bottle |
|||
|
Sample |
1 |
2 |
3 |
4 |
|
1 |
0.5910.591 |
0.6170.617 |
0.6020.602 |
0.5900.590 |
|
2 |
0.5830.583 |
0.5860.586 |
0.5800.580 |
0.5900.590 |
|
3 |
0.5760.576 |
0.5750.575 |
0.5860.586 |
0.6190.619 |
|
4 |
0.6220.622 |
0.6190.619 |
0.6180.618 |
0.5720.572 |
|
5 |
0.6050.605 |
0.5840.584 |
0.6200.620 |
0.6060.606 |
|
6 |
0.5730.573 |
0.6100.610 |
0.6190.619 |
0.6200.620 |
Factors for calculating? three-sigma limits for the
x overbarx?-chart
and? R-chart
|
Size of Sample?(n) |
Factor for UCL and LCL for
x overbarx?-chart ?(Upper A 2A2?) |
Factor for LCL for?R-Chart
?(Upper D 3D3?) |
Factor for UCL for?R-Chart
?(Upper D 4D4?) |
|
2 |
1.8801.880 |
00 |
3.2673.267 |
|
3 |
1.0231.023 |
00 |
2.5752.575 |
|
4 |
0.7290.729 |
00 |
2.2822.282 |
|
5 |
0.5770.577 |
00 |
2.1152.115 |
|
6 |
0.4830.483 |
00 |
2.0042.004 |
|
7 |
0.4190.419 |
0.0760.076 |
1.9241.924 |
|
8 |
0.3730.373 |
0.1360.136 |
1.8641.864 |
|
9 |
0.3370.337 |
0.1840.184 |
1.8161.816 |
|
10 |
0.3080.308 |
0.2230.223 |
1.7771.777 |
Assume that only these six samples are? sufficient, and use the data to determine control limits for an? R- and an
x overbarx?-chart.
Compute the range R and the sample mean
x overbarx
for each sample.
?(Enter
your responses rounded to three decimal
places?.)
|
Bottle |
||||||
|
Sample |
1 |
2 |
3 |
4 |
R |
x overbarx |
|
1 |
0.5910.591 |
0.6170.617 |
0.6020.602 |
0.5900.590 |
0.0270.027 |
0.6000.600 |
|
2 |
0.5830.583 |
0.5860.586 |
0.5800.580 |
0.5900.590 |
0.0100.010 |
0.5850.585 |
|
3 |
0.5760.576 |
0.5750.575 |
0.5860.586 |
0.6190.619 |
0.0440.044 |
0.5890.589 |
|
4 |
0.6220.622 |
0.6190.619 |
0.6180.618 |
0.5720.572 |
0.0500.050 |
0.6080.608 |
|
5 |
0.6050.605 |
0.5840.584 |
0.6200.620 |
0.6060.606 |
0.0360.036 |
0.6040.604 |
|
6 |
0.5730.573 |
0.6100.610 |
0.6190.619 |
0.6200.620 |
0.0470.047 |
0.6060.606 |
The
UCL Subscript Upper RUCLR
equals
nothing
inches and the
LCL Subscript Upper RLCLR
equals
nothing
inches.
?(Enter
your responses rounded to three decimal
places.
If your answer for
LCL Subscript Upper RLCLR
is? negative, enter this value as
0.?)
Aspen Plastics produces plastic bottles to customer order. The quality inspector randomly selects four bottles from...
4 Aspen Plastics produces plastic bottles to customer order. The quality inspector randomly selects four bottles from the bottle machine and measures the outside diameter of the bottle neck, a critical quality dimension that determines whether the bottle cap will fit properly. The dimensions (in.) from the last six samples are Bottle Sample 1 2 3 0.592 0.588 0.590 0.617 2 0.598 0.587 0.580 0.585 3 0.613 0.594 0.615 0.589 0.608 0.610 0.623 0.623 5 0.572 0.623 0.572 0.585 0.582...
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Organic Grains LLC uses statistical process control to ensure that its health-conscious, low-fat, multigrain sandwich loaves have the proper weight. Based on a previously stable and in-control process, the control limits of the x overbarx - and R-charts are: UCL Subscript x overbarUCLx = 5.48 LCL Subscript x overbarLCLx = 5.12 UCL Subscript Upper RUCLR = 0.923 LCL Subscript Upper RLCLR = 0 Over the past few days, they have taken five random samples of four loaves each and have...
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Auto pistons at Wemming Chung's plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled. From sample sizes of 1010 pistons produced each day, the mean and the range of this diameter have been as follows: Day Mean Bold x overbarx (mm) Range R (mm) 1 156.9156.9 4.24.2 2 153.2153.2 4.64.6 3 153.6153.6 4.14.1 4 155.5155.5 5.05.0 5 156.6156.6 4.54.5 a) What is the value of x double overbarx?...
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Consider Chapter? 3, Problem 4 that was a homework problem
dealing with the quality of Aspen Plastics bottle neck diameters.
For randomly entered? data, results were obtained as shown?
below:
For the data? shown, the calculation of the Lower Control Limit
for the? X-bar chart is equal to which of the? following?
A. none of these
B. =D9-D10*D16
C. =D9+D10*D16
D. = 0.729
PLEASE INDICATE CORRECT ANSWER ONLY!
Solver -R and X-Bar Charts 5 Enter data in yellow shaded areas...