Question

The defect rate for your product has historically been about 4.00%. For a sample size of 100, the upper and lower 3-sigma control chart limits are:

UCL Subscript p = nothing (enter your response as a number between 0 and 1, rounded to four decimal places).

LCL Subscript p = nothing (enter your response as a number between 0 and 1, rounded to four decimal places)

Answer #1

Pioneer Chicken advertises "lite" chicken with 30% fewer
calories than standard chicken. When the process for "lite"
chicken breast production is in control, the average chicken
breast contains 420 calories, and the standard deviation in
caloric content of the chicken breast population is 20 calories.
Pioneer wants to design an x overbar-chart to monitor the caloric
content of chicken breasts, where 25 chicken breasts would be
chosen at random to form each sample. a) What are the lower and
upper...

Random samples of size n = 410 are taken from a
population with p = 0.09.
Calculate the centerline, the upper control limit (UCL), and the
lower control limit (LCL) for the p¯p¯ chart.
(Round the value for the centerline to 2 decimal places and
the values for the UCL and LCL to 3 decimal places.)
Calculate the centerline, the upper control limit (UCL), and the
lower control limit (LCL) for the p¯p¯ chart if samples of
290 are used....

Random samples of size n = 200 are taken from a population with
p = 0.08.
a. Calculate the centerline, the upper control limit (UCL), and
the lower control limit (LCL) for the p¯chart
b. Calculate the centerline, the upper control limit (UCL), and
the lower control limit (LCL) for the p¯ chart if samples of 120
are used.
c. Discuss the effect of the sample size on the control limits.
The control limits have a ___ spread with smaller...

Twelve samples, each containing five parts, were taken from a
process that produces steel rods at Emmanual Kodzi's factory. The
length of each rod in the samples was determined. The results were
tabulated and sample means and ranges were computed.
Refer to Table S6.1 - Factors for computing control chart limits
(3 sigma) for this problem.
Sample
Size, n
Mean Factor,
A2
Upper Range,
D4
Lower Range,
D3
2
1.880
3.268
0
3
1.023
2.574
0
4
0.729
2.282
0...

Twenty-five samples of 100 items each were inspected when a
process was considered to be operating satisfactorily. In the 25
samples, a total of 180 items were found to be defective.
(a)What is an estimate of the proportion defective when the
process is in control?
_________________.
(b)What is the standard error of the proportion if samples of
size 100 will be used for statistical process control? (Round your
answer to four decimal places.)
________________.
(c)Compute the upper and lower control...

Hour Xbar R Hour
Xbar R Hour Xbar R Hour
Xbar R
1 3.35 0.76 7 2.95
0.53 13 3.11 0.80
19 3.41 1.66
2 3.00 1.23 8 2.75
1.13 14 2.73 1.36
20 2.89 1.04
3 3.22 1.38 9 3.12
0.66 15 3.12 1.11
21 2.65 1.08
4 3.39 1.21 10
2.75 1.28 16 2.74 0.50
22 3.38 0.46
5 3.17 1.12 ...

A manufacturing process produces steel rods in batches of 2,200.
The firm believes that the percent of defective items generated by
this process is 4.3%.
a. Calculate the centerline, the upper control
limit (UCL), and the lower control limit (LCL) for the p¯p¯ chart.
(Round your answers to 3 decimal places.)
centerline-
Upper control limit-
Lower control limit-
b. An engineer inspects the next batch of 2,200
steel rods and finds that 5.5% are defective. Is the manufacturing
process under...

The following are quality control data for a manufacturing
process at Kensport Chemical Company. The data show the temperature
in degrees centigrade at five points in time during a manufacturing
cycle.
Sample
x
R
1
95.72
1.0
2
95.24
0.9
3
95.18
0.7
4
95.42
0.4
5
95.46
0.5
6
95.32
1.1
7
95.40
0.9
8
95.44
0.3
9
95.08
0.2
10
95.50
0.6
11
95.80
0.6
12
95.22
0.2
13
95.60
1.3
14
95.22
0.6
15
95.04
0.8
16...

The following are quality control data for a manufacturing
process at Kensport Chemical Company. The data show the temperature
in degrees centigrade at five points in time during a manufacturing
cycle.
Sample
x
R
1
95.72
1.0
2
95.24
0.9
3
95.18
0.7
4
95.42
0.4
5
95.46
0.5
6
95.32
1.1
7
95.40
0.9
8
95.44
0.3
9
95.08
0.2
10
95.50
0.6
11
95.80
0.6
12
95.22
0.2
13
95.58
1.3
14
95.22
0.6
15
95.04
0.8
16...

The following are quality control data for a manufacturing
process at Kensport Chemical Company. The data show the temperature
in degrees centigrade at five points in time during a manufacturing
cycle.
Sample
x
R
1
95.72
1.0
2
95.24
0.9
3
95.18
0.7
4
95.44
0.4
5
95.46
0.5
6
95.32
1.1
7
95.40
0.9
8
95.44
0.3
9
95.08
0.2
10
95.50
0.6
11
95.80
0.6
12
95.22
0.2
13
95.54
1.3
14
95.22
0.6
15
95.04
0.8
16...

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