As a quality control manager, you have been measuring the pressure level provided by a newly installed pump which are purchased from new manufacturer. The mean pressure maintained by the old pump was 150.00 kPa. The manufacturer of the new pump claims that the pressure will be improved after installing the new pump. You have been tasked to ensure that the new pump is better. DATA 96.17 128.32 169.54 167.06 108.02 125.95 152.66 106.58 156.05 134.51 108.77 129.19 93.88 139.16 119.73 176.95 175.1 131.27 182.63 123.95 116.56 91.28 133.55 117.12 217.31 147.25 104.32 159.96 99.02 104.7 124.9 131.31 98.18 66.54 172.01 46.32 140.98 158.39

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H0 : =150.00 kPa

H1 :>150.00 kPa

b) α= 0.01;

sample variance : 1300 freq. table 

sample deviation : 36.0555 freq. table 

 

D) CREATE HYPOTHESIS TESTING
SAMPLE MEAN FROM (Frequency table)
POPULATION MEAN: given
SIGNIFICANCE LEVEL: 0.01
SAMPLE STANDARD DEVIATION (Frequency table)
TEST VALUE
Confidence interval 90%
This data has no outliers
(Explain)
Transcribed Image Text:D) CREATE HYPOTHESIS TESTING SAMPLE MEAN FROM (Frequency table) POPULATION MEAN: given SIGNIFICANCE LEVEL: 0.01 SAMPLE STANDARD DEVIATION (Frequency table) TEST VALUE Confidence interval 90% This data has no outliers (Explain)
As a quality control manager, you have been measuring the pressure level provided by a newly
installed
dund
which are purchased from new manufacturer. The mean pressure maintained by the
old pump was 150.00 kPa. The manufacturer of the new pump claims that the pressure will be
improved after installing the new pump. You have been tasked to ensure that the new pump is
better.
DATA
96.17
128.32
169.54
167.06
108.02
125.95
152.66
106.58
156.05
134.51
108.77
129.19
93.88
139.16
119.73
176.95
175.1
131.27
182.63
123.95
116.56
91.28
133.55
117.12
217.31
147.25
104.32
159.96
99.02
104.7
124.9
131.31
98.18
66.54
172.01
46.32
140.98
158.39
cumula Relative
Mid point (X m) =
freque tive
interval boundary ncy (f) frequen
Class
Class
frequency
f x Xm
lower + upper
су
Ef
2
46+70
46-70
45.5-70.5
= 0. 04
50
= 58
2 x 58 = 116
2
4
71-95
70.5-95.5
= 0. 08
50
83
332
12
96-120
95.5-120.5 12
18
= 0. 24
50
108
1296
15
121-145
120.5-145.5 15
33
= 0. 30
50
133
1995
9
146-170
= 0. 18
50
158
1422
145.5-170.5 9
42
5
171-195
170.5-195.5 5
47
= 0. 10
50
183
915
196-220
195.5-220.5 3
50
3
0.06
208
624
50
II
Transcribed Image Text:As a quality control manager, you have been measuring the pressure level provided by a newly installed dund which are purchased from new manufacturer. The mean pressure maintained by the old pump was 150.00 kPa. The manufacturer of the new pump claims that the pressure will be improved after installing the new pump. You have been tasked to ensure that the new pump is better. DATA 96.17 128.32 169.54 167.06 108.02 125.95 152.66 106.58 156.05 134.51 108.77 129.19 93.88 139.16 119.73 176.95 175.1 131.27 182.63 123.95 116.56 91.28 133.55 117.12 217.31 147.25 104.32 159.96 99.02 104.7 124.9 131.31 98.18 66.54 172.01 46.32 140.98 158.39 cumula Relative Mid point (X m) = freque tive interval boundary ncy (f) frequen Class Class frequency f x Xm lower + upper су Ef 2 46+70 46-70 45.5-70.5 = 0. 04 50 = 58 2 x 58 = 116 2 4 71-95 70.5-95.5 = 0. 08 50 83 332 12 96-120 95.5-120.5 12 18 = 0. 24 50 108 1296 15 121-145 120.5-145.5 15 33 = 0. 30 50 133 1995 9 146-170 = 0. 18 50 158 1422 145.5-170.5 9 42 5 171-195 170.5-195.5 5 47 = 0. 10 50 183 915 196-220 195.5-220.5 3 50 3 0.06 208 624 50 II
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