The employee benefits manager of a large public university would like to estimate the proportion of full-time employees who prefer adopting the first (plan A) of three available health care plans in the next annual enrollment period. A random sample of the university’s employees and their tentative health care preferences are given in the file Healthcare.xlsx below. Calculate a 88% confidence interval for the proportion of all the university’s employees who favor plan A. What are the values of lower limit and upper limit? Round your answer to 3 decimal places.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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The employee benefits manager of a large public university would like to estimate the proportion of full-time employees who prefer adopting the first (plan A) of three available health care plans in the next annual enrollment period. A random sample of the university’s employees and their tentative health care preferences are given in the file Healthcare.xlsx below. Calculate a 88% confidence interval for the proportion of all the university’s employees who favor plan A. What are the values of lower limit and upper limit? Round your answer to 3 decimal places.

76
77
78
79
19
80
81
01
82
04
83
199
84
09
85
199
86
00
87
01
8.8
00
89
03
90
30
91
24
92
34
93
29
94
24
95
39
96
30
97
31
98
30
99
23
100
100
101
101
102
103
105
104
105
106
107
-
108
-
109
-
110
-
111
112
-
113
-
114
-
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-
116
-
117
118
119
-
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121
-
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-
123
-
124
-
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-
126
-
127
-
128
www
129
130
131
151
132
152
133
239
134
201
135
4:33
136
1:30
137
157
138
139
233
140
ESTU
141
ESTA
142
ESTE
143
ESTO
144
ESTY
145
ESTU
146
140
147
148
148
149
150
1
1
2
2
1
=
3
5
3
5
3
5
3
2
2
²
3
2
2
²
1
*
2
²
2
²
2
²
2
2
1
1
3
3
2
2
²
1
²
2
2
2
5
3
2
2
2
²
2
2
2
1
3
1
-
1
2
3
-
1
-
2
3
2
2
-
2
3
=
2
-
3
=
3
2
2
1
1
=
2
1
-
2
-
1
-
1
3
1
2
2
1
=
1
=
2
²
2
²
2
²
3
3
3
P
2
2
1
=
2
2
3
P
3
3
2
2
1
=
2
2
2
2
1
1
2
1
Plan C
Plan B
Plan A
Plan A
Fianc
Plan C
Plan A
Dana
Plan B
Piano
Plan B
Piano
Plan C
Danc
Plan A
Diana
Plan A
Diana
Plan A
Diana
Plan A
Diana
Plan B
Fidib
Plan B
Fidib
Plan B
Piano
Plan A
Dana
Plan C
Danc
Plan A
Dana
Plan B
Fidib
Piano
Plan B
Plan B
για το
Plan B
Fiano
Plan C
Fianc
Plan A
Dana
Fianc
Plan C
Plan B
Plan B
Plan B
Plan A
Plan C
Plan B
Plan B
kane
Plan C
kame
Plan A
www
Plan C
Lane
Plan B
Dane
Plan A
www
Plan A
www
Plan A
www
Plan A
P
Plan A
P
Plan B
kane
Plan B
www
Plan B
ane
Plan B
kame
Plan B
Dane
Plan B
kame
Plan A
ww
Plan A
www
Plan C
Dane
Plan C
Dane
Plan A
P
Plan C
P
Plan B
S
Plan B
Plan B
Plan B
Plan B
Plan B
Plan B
Plan B
Plan A
FIDIA
Plan B
Plan B
Plan B
Plan B
Plan A
FIDIA
Plan B
Plan B
Plan B
Plan B
Plan A
FIDIA
Plan B
Plan B
Plan
B
Plan B
Plan B
Transcribed Image Text:76 77 78 79 19 80 81 01 82 04 83 199 84 09 85 199 86 00 87 01 8.8 00 89 03 90 30 91 24 92 34 93 29 94 24 95 39 96 30 97 31 98 30 99 23 100 100 101 101 102 103 105 104 105 106 107 - 108 - 109 - 110 - 111 112 - 113 - 114 - 115 - 116 - 117 118 119 - 120 - 121 - 122 - 123 - 124 - 125 - 126 - 127 - 128 www 129 130 131 151 132 152 133 239 134 201 135 4:33 136 1:30 137 157 138 139 233 140 ESTU 141 ESTA 142 ESTE 143 ESTO 144 ESTY 145 ESTU 146 140 147 148 148 149 150 1 1 2 2 1 = 3 5 3 5 3 5 3 2 2 ² 3 2 2 ² 1 * 2 ² 2 ² 2 ² 2 2 1 1 3 3 2 2 ² 1 ² 2 2 2 5 3 2 2 2 ² 2 2 2 1 3 1 - 1 2 3 - 1 - 2 3 2 2 - 2 3 = 2 - 3 = 3 2 2 1 1 = 2 1 - 2 - 1 - 1 3 1 2 2 1 = 1 = 2 ² 2 ² 2 ² 3 3 3 P 2 2 1 = 2 2 3 P 3 3 2 2 1 = 2 2 2 2 1 1 2 1 Plan C Plan B Plan A Plan A Fianc Plan C Plan A Dana Plan B Piano Plan B Piano Plan C Danc Plan A Diana Plan A Diana Plan A Diana Plan A Diana Plan B Fidib Plan B Fidib Plan B Piano Plan A Dana Plan C Danc Plan A Dana Plan B Fidib Piano Plan B Plan B για το Plan B Fiano Plan C Fianc Plan A Dana Fianc Plan C Plan B Plan B Plan B Plan A Plan C Plan B Plan B kane Plan C kame Plan A www Plan C Lane Plan B Dane Plan A www Plan A www Plan A www Plan A P Plan A P Plan B kane Plan B www Plan B ane Plan B kame Plan B Dane Plan B kame Plan A ww Plan A www Plan C Dane Plan C Dane Plan A P Plan C P Plan B S Plan B Plan B Plan B Plan B Plan B Plan B Plan B Plan A FIDIA Plan B Plan B Plan B Plan B Plan A FIDIA Plan B Plan B Plan B Plan B Plan A FIDIA Plan B Plan B Plan B Plan B Plan B
Employee
1
2
3
4
5
=
6
=
7
-
8
=
9
*
10
11
-
12
-
13
*
14
-
15
-
16
-
17
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
=
26
27
28
29
30
31
34
32
34
33
39
34
EY
35
39
36
DU
37
3.8
30
39
53
40
TU
41
174
42
174
43
10
44
45
46
TU
47
48
TO
49
12
50
DU
51
51
52
53
39
54
55
56
57
58
59
60
61
Z
62
63
64
65
66
67
68
69
70
71
72
73
74
75
Classification
1
1
2
3
=
1
2
-
3
-
2
2
=
2
-
3
=
2
-
3
=
3
=
2
2
=
1
=
1
2
=
1
=
2
=
1
-
1
=
3
=
1
2
1
=
1
2
2
2
2
²
3
3
3
2
²
1
2
2
2
3
5
3
3
2
1
+
2
²
2
2
1
2
2
2
1
2
2
2
1
2
1
2
2
²
3
3
2
²
2
²
2
2
2
3
=
3
1
1
1
2
-
1
-
1
-
2
-
2
2
2
2
3
=
2
=
1
1
1
3
3
1
Favored
Plan B
Plan B
Plan C
Plan A
Plan C
Plan B
rano
Plan A
p
Plan A
FanA
Plan A
p
Plan A
p
Plan A
p
Plan B
pe
Plan B
rano
Plan B
B
Plan B
rano
Plan B
B
Plan B
rano
Plan A
FanA
Plan A
FanA
Plan C
ranc
Plan C
ranc
Plan A
BEA
Plan C
Dane
Plan B
Plan B
Plan B
P
Plan B
Plan B
Plan B
Plan B
Plan B
Plan A
Plan B
an
Plan B
an
Plan B
an
Plan B
an
Plan A
Plan B
Plan B
an
Plan A
FIDIA
Plan B
an
Plan B
an
Plan B
an
Plan B
ridi
ridi
Plan B
ridi
Plan B
Plan B
Plan C
Fidio
Plan B
Plan A
FIDIA
Plan A
FIDIA
Plan B
rian
Plan A
Plan A
www
Plan B
www
Plan B
www
Plan B
www
Plan B
www
Plan B
www
Plan B
www
Plan A
Plan C
www
Plan B
www
Plan C
www
Plan B
www
Plan C
www
Plan C
ww
www
Plan B
www
Plan B
www
Plan B
Plan B
Plan B
Plan A
Plan C
Plan B
Transcribed Image Text:Employee 1 2 3 4 5 = 6 = 7 - 8 = 9 * 10 11 - 12 - 13 * 14 - 15 - 16 - 17 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 = 26 27 28 29 30 31 34 32 34 33 39 34 EY 35 39 36 DU 37 3.8 30 39 53 40 TU 41 174 42 174 43 10 44 45 46 TU 47 48 TO 49 12 50 DU 51 51 52 53 39 54 55 56 57 58 59 60 61 Z 62 63 64 65 66 67 68 69 70 71 72 73 74 75 Classification 1 1 2 3 = 1 2 - 3 - 2 2 = 2 - 3 = 2 - 3 = 3 = 2 2 = 1 = 1 2 = 1 = 2 = 1 - 1 = 3 = 1 2 1 = 1 2 2 2 2 ² 3 3 3 2 ² 1 2 2 2 3 5 3 3 2 1 + 2 ² 2 2 1 2 2 2 1 2 2 2 1 2 1 2 2 ² 3 3 2 ² 2 ² 2 2 2 3 = 3 1 1 1 2 - 1 - 1 - 2 - 2 2 2 2 3 = 2 = 1 1 1 3 3 1 Favored Plan B Plan B Plan C Plan A Plan C Plan B rano Plan A p Plan A FanA Plan A p Plan A p Plan A p Plan B pe Plan B rano Plan B B Plan B rano Plan B B Plan B rano Plan A FanA Plan A FanA Plan C ranc Plan C ranc Plan A BEA Plan C Dane Plan B Plan B Plan B P Plan B Plan B Plan B Plan B Plan B Plan A Plan B an Plan B an Plan B an Plan B an Plan A Plan B Plan B an Plan A FIDIA Plan B an Plan B an Plan B an Plan B ridi ridi Plan B ridi Plan B Plan B Plan C Fidio Plan B Plan A FIDIA Plan A FIDIA Plan B rian Plan A Plan A www Plan B www Plan B www Plan B www Plan B www Plan B www Plan B www Plan A Plan C www Plan B www Plan C www Plan B www Plan C www Plan C ww www Plan B www Plan B www Plan B Plan B Plan B Plan A Plan C Plan B
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