Purdue North CentralStat 302Case Study 6This is the 6th case study required for the Stat 302 class at PNC taught by Professor K.
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STAT 302
Case Study 6
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S
a
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p
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S
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m
p
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M
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_
_
X
=
8
.
5
9
5
U
C
L
=
1
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.
4
7
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L
C
L
=
4
.
7
1
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X
b
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a
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o
l
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0
9
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S
a
m
p
l
e
S
a
m
p
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e
M
e
a
n
_
_
X
=
8
.
5
9
5
U
C
L
=
1
2
.
4
7
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L
C
L
=
4
.
7
1
8
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b
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1
The X bar chart shows that the process is in control. We are
basing this off of our assessment of the WECO rules.
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8
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5
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2
1
9
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6
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3
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0
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4
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1
1
0
9
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S
a
m
p
l
e
S
a
m
p
l
e
M
e
a
n
_
_
X
=
8
.
2
5
0
U
C
L
=
1
2
.
1
7
3
L
C
L
=
4
.
3
2
8
X
b
a
r
C
h
a
r
t
o
f
C
o
l
1
2
8
2
5
2
2
1
9
1
6
1
3
1
0
7
4
1
1
3
1
2
1
1
1
0
9
8
7
6
5
4
S
a
m
p
l
e
S
a
m
p
l
e
M
e
a
n
_
_
X
=
8
.
2
5
0
U
C
L
=
1
2
.
1
7
3
L
C
L
=
4
.
3
2
8
X
b
a
r
C
h
a
r
t
o
f
C
o
l
1
Based on the Waco rules we have determined that this Xbar chart
is out of control. Between the points of 5,6, and 7 there are more
than 3 standards deviations on either side.
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![58 STAT.] 78TH CONG., 2D SESS.-CHS. 302, 303-JUNE 28, 1944 · 58 STAT.] 78TH CONG., 2D SESS.-CHS. 302, 303-JUNE 28, 1944 pensation for employees in the Postal Service", approved April](https://img.pdfslide.us/doc/110x75/5f7b6d20cf5ba2790404745e/58-stat-78th-cong-2d-sess-chs-302-303-june-28-1944-58-stat-78th-cong.jpg)
