Research analysis
Par Stella0400 • 14 Février 2018 • 1 717 Mots (7 Pages) • 564 Vues
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d) Production site A is not operating at its maximum capacity.
e) There would be no effect because the site A has 600 excess capacity and if it drops by 500 (from 2000 to 1500) the result would not be different. The result table confirms this answer since the total cost of 14140 remains.
f) The optimal cost will become 15360 and there will be supply shortage of 400 for mugs
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QUESTION (4)
One of the major measures of the quality of service provided by any organization is the speed with which it responds to customer complaints. A large family-owned department store selling furniture and flooring, including carpets, has undergone a major expansion in the past several years. In particular, the flooring department had expanded from 2 installation crews to an installation supervisor, a measure, and 15 installation crews. Last year there were 50 complaints concerning carpet installation. The following data represent the number of days between the receipt of a complaint and the resolution of the complaint.
54
5
35
137
31
27
152
2
123
81
74
27
11
19
126
110
110
29
61
35
94
31
26
5
12
4
165
32
29
28
29
26
25
1
14
13
13
10
5
27
4
52
30
22
36
26
20
23
33
68
a)
T-Test
One-Sample Statistics
N
Mean
Std. Deviation
Std. Error Mean
Time
50
43.0400
41.92606
5.92924
One-Sample Test
Test Value = 20
t
df
Sig. (2-tailed)
Mean Difference
95% Confidence Interval of the Difference
Lower
Upper
Time
3.886
49
.000
23.04000
11.1247
34.9553
Interpretation:
- The Hypothesis is defined as below:
H0: µ ≤ 20
H1 : µ > 20
According to the one-sample T-test, the P-value =.000 0 must be rejected. Meaning that the probability of obtaining a sample whose mean is 43.0040 days when the null hypothesis is true is .000.
b) In every T-test two assumptions must be made which are:
Normality
Random Sampling
c)
Tests of Normality
Kolmogorov-Smirnova
Shapiro-Wilk
Statistic
df
Sig.
Statistic
df
Sig.
time
.287
50
.000
.797
50
.000
a. Lilliefors Significance Correction
Interpretation:
- The p-value of Shapiro-wilk test of normality is .000
The
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