Browse over 20 million
homework answers & study documents

MGT449 Wk 5 DQ 2

Type

Homework

Rating

Showing Page:
1/9
Quality Textiles International
Quality Textiles International is an organization that weaves fabric and then prepares the required sheet lengths as desired by customers. They have received recent complaints that the fabric weight, measured in ounces per square inch, is not meeting customer requirements, which are very close to the control limits. Quality Textiles International’s quality assurance department checks the fabric weight on regular basis and knows that their process for fabric weight has a mean of 2.73 oz/in2 and a standard deviation of 0.31.
The following table shows 50 fabric weight measurements of fabric samples collected by the quality assurance department:
Observation Fabric Weight Calculate the Mean and the Standard deviation on the lab collected samples. Is the mean and standard deviation still the same as the original process?
1 2.78
2 2.46
Mean of the 50 fabric weights is 2.98 oz/in^2 and the standard deviation is 0.52 oz. These values are different from the established values of 2.73 and 0.31 for the process.
3 3
4 2.8 Build a histogram of the data frequencies.
5 2.71
6 2.61
Bins Frequency
7 3.12
2.45 9
8 3.02
2.85 14
9 2.94
3.25 9
10 2.44
3.65 13
11 3.06
4.05 5
12 2.9
13 2.74
14 2.57
15 2.06
16 2.32
17 2.62
18 2.41
19 2.43
20 3.44
21 2.69
22 2.36
23 1.92
24 2
25 2.63 Frequency Distribution - Quantitative
26 2.75
27 2.79 Fabric weight
28 2.81 lower
29 2.81 1.49
30 2.43 1.80
31 2.86 2.11
32 3.09 2.42
33 3.18 2.73
34 3.26 3.04
35 3.29 3.35
36 3.3 3.66
37 3.3 3.97
38 3.31

Sign up to view the full document!

lock_open Sign Up
39 3.33
40 3.35
41 3.35
42 3.34
43 3.5
44 3.55
45 3.65
46 3.78
47 4
48 4.01
49 3.99
50 4
LCL 1.8
UCL 3.66
Mean, x-bar = 2.97
Standard Deviation, s =
0.55

Sign up to view the full document!

lock_open Sign Up

Sign up to view the full document!

lock_open Sign Up

Anonymous
Had to paraphrase some of the content but overall, really useful material.

Anonymous
Just what I needed… fantastic!

Anonymous
Use Studypool every time I am stuck with an assignment I need guidance.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4