Answer To: I would like the same tutor who completed 54040 to do this assignment
Bolla V V Satyanarayana answered on Apr 26 2021
1)
Exercise 38)
2)
Exercise 44
e)
No, this interval does not contains Zero (0.008 and 0.132) . This indicate that there is a significance difference between proportion of male and females who will vote for this candidate.
f)
The correct approach is Part e.
3)
Exercise 82:
Given that
Time for Heat 2(x)
Time fo Heat 5(y)
251.7
243.3
252
243.3
252.3
243.6
253
244.2
254.8
246.8
256.5
248.8
258.6
250
283.5
252.2
4)
Exercise 86
5)
Exercise 30:
Given that
a)
Regular(x)
Premium(y)
Difference(d) = x-y
16
19
-3
20
22
-2
21
24
-3
22
24
-2
23
25
-2
22
25
-3
27
26
1
25
26
-1
27
28
-1
28
32
-4
Regular(x)
Premium(y)
16
19
20
22
21
24
22
24
23
25
22
25
27
26
25
26
27
28
28
32
6) Chapter 18)
a)
Pain intensity Before VAS(X)
Pain intensity After VAS(Y)
Difference(d) = x-y
96
85
11
51
52
-1
41
41
0
21
24
-3
46
40
6
62
66
-4
61
58
3
58
43
15
85
79
6
52
40
12
55
56
-1
62
59
3
b)
Pain intensity Before VAS(X)
Pain intensity After VAS(Y)
Difference(d) = x-y
51
58
3
91
91
0
43
53
-10
69
62
7
72
76
-4
99
90
9
62
48
14
57
54
3
7)
Exercise 10.
Weapon
Injuiry Site
Total
Body
Head/Neck
Limb
Arrow
5
2
5
12
Ground/Rock
1
5
5
11
Sword
61
38
23
122
Total
67
45
33
145
b)
We want to test the hypothesis that there is a significant relation between injuries site and Weapon
(
)
(
)
(
)
(
)
1111
2222
12
12
)
,because n67 and n129410
and n=26 and n16310
Sample is less than 10% population size.
)
11
1
0.1860.292
1
0.206710.2067
36
c
Yespp
pp
d
pp
Z
PP
nn
=-=>
-=>
--------------------------------------
-
=
æö
-+
ç÷
èø
-
=
-
(
)
1
189
2.22
Using Excel funtion to find P value
P value =NORMSDIST2.22
=0.0132
æö
+
ç÷
èø
=-
-
----------------------------
(
)
,10.10,9
b)
Using Excel function to find critical va
lue for 90%
confidence interval.
10.900.10
Degress of Freedom1
101
9
Using Excel function
n
dfn
tt
a
a
-
=-=
=-
=-
=
=
(
)
0.10,31
TINV0.10,9
1.833
t
=
=
=
(
)
(
)
0.10,9
90% confidence interval for mean milage
difference of Regular
and Premium gasoline
21.8330.447
20.819
d
s
dt
n
æö
=±
ç÷
èø
=-±
=-±
Upper value = 20.819 = -1.180
Lower value = 20.819 =-2.820
Thus the 90% confidence for mean milage
difference of
Regular and Premium gasoline is lies bet
ween -5.102
and -0.438.
-+
--
)
From the part a
Conclusion:Therefore we conclude that th
ere is a sufficient evidence
to support that the cars get significant
ly better fuel economy with
premium gasoline.Yes, it is significant
so th
c
e company choose to
stuck with regular gasoline.
)
Given that
d
(
)
(
)
(
)
(
)
1
2
Sample size for Rgular10
Sample size for Premium10
Mean for Rgular:
Using Excel function
=AVERA
GE16,20,21,22,23,22,27,25,27,28
=23
n
n
x
=
=
.10
(
)
(
)
1
Standard devaiton for Rgular:
Using Excel function
=STDEV
A16,20,21,22,23,22,27,25,27,28
=3.73
s
(
)
(
)
(
)
2
Mean for Premium:
Using Excel function
=AVERA
GE19,22,24,24,25,25,26,26,28,32
=25.10
Standard devaiton for Premium:
Using Excel functio
y
s
(
)
n
=STDEV
A19,22,24,24,25,25,26,26,28,32
=3.45
(
)
(
)
(
)
(
)
(
)
22
1122
12
22
11
Pooled Standard devation
2
101*3.73101*3.45
10102
3.5886
nsns
S
nn
éùéù
-+-
ëûëû
=
+-
éùéù
-+-
ëûëû
=
+-
=
(
)
(
)
(
)
0
)
Decision: Here we observe that p-value0.
0132 is less than level of
significance value0.05.So we reject the
null hypothesis.
Conclusion:Therefore we conclusion that
there is a sufficient
evidence to
d
H
support that the death rate for patient
s with heart disease
within 4 years is less than in non depre
ssed patients than in depressed
We want to test the hypothesis that ther
e is a significance difference
between mean milage for Regular and Prem
ium gasoline
(
)
(
)
012
112
Null and Alternative hypothesis are
H:
Versus
H: 2 test
Level of significance value0.05
Tailed
mm
mm
a
=
¹-
=
12
Test statistic value
t =
11
23.1025.10
11
35886
1010
1.25
xy
S
nn
-
+
-
=
+
=-
(
)
12
Degrees of freedom2
=1
0+10-2
=1
8
Using Excel Functin we find p-value
P-value =
=TDI
S
dfnn
=+-
(
)
3
T1.25,18,2
0.
=
227
(
)
(
)
(
)
0
Decision:Here we observe that p-value0.2
273 is greater than level of
significance value0.05.So we fail to rej
ect the null hypothesis
Conclusion:Therefore we conclude that th
ere is no sufficient evide
H
nce
to support that there is a significance
difference between mean milage of
Regular and Premium gasoline
(
)
(
)
(
)
Sample size for Paired data12
Mean for Difference for two samples:
Using Excel function
=AVERA
GE11,1,0,3,6,4,3,6,4,15,6,12,1,2
=
n
d
=
-----
3.92
(
)
(
)
Stndard deviation for Difference for two
samples
Using Excel function
=STDEV
A11,1,0,3,6,4,3,6,4,15,6,12,1,2
=6.20
d
s
-----
(
)
(
)
0
1
We want to test the hypothesis that accu
punchure reduce pain intensity on averag
e
Null and Alternative hypothesis
H:0
Versus
H:0 1Tailed test
Level of signifiance value0.05
d
d
m
m
a
£
>-
=
(
)
Test statistic value
t =
3.92
6.20
12
2.19
Degrees of freedom1
= 12-1
=11
d
d
s
n
dfn
=
=
=-
(
)
5
Using Excel Functin we find p-value
P-value =
=TDI
ST2.19,11,1
=
0
.
025
)
-value = 0.0132 it means that there is...