Consider the cellphone usage data in attached table. Test the claim that the average monthly expense on cellphone use of more than half of the female undergraduate students in UCLA is at least $500. Use α = 0.05. • State Ho and Ha. • Write the formula of the test statistic to be used. • State the decision rule at 0.05 level of significance. • Compute for the value of the test statistic.

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Consider the cellphone usage data in attached table. Test the claim that the average monthly expense on cellphone use of more than half of the female undergraduate students in UCLA is at least $500. Use α = 0.05.


• State Ho and Ha.
• Write the formula of the test statistic to be used.
• State the decision rule at 0.05 level of significance.
• Compute for the value of the test statistic.
• Is there sufficient evidence at 0.05 level of significance to conclude that more than half of the female undergraduate students in UCLA have an average monthly expense of at least $500?

Cellphone Usage Data: Array of Average Monthly Expense
Table C.2a.
Table C.2a. (continued)
Average Month
Expense on
Cellphone Use
on Cellphone Use Among Females
Average Monthly
Expense on
Cellphone Use
Control
Average Monthly
Expense on
Cellphone Use
Control
Number
Average Monthly
Expense on
Cellphone Use
Control
Number
Average Monthly
Expense on
Cellphone Use
Control
Number
Control
Number
Control
200
Average Monthly
Expense on
Cellphone Use
Number
201
Number
300
250
161
202
500
275
250
1
8000
162
203
41
121
500
250
4000
1000
163
204
250
42
81
122
500
250
3
2300
900
164
205
250
123
124
43
82
550
500
250
4
2000
900
165
44
83
500
500
250
5
2000
900
500
125
166
45
84
500
250
6.
2000
900
500
126
167
46
85
500
250
7
2000
900
500
127
168
47
86
500
250
8
2000
900
500
128
169
48
87
500
250
1800
900
500
129
170
49
88
400
250
10
1700
900
500
130
171
50
89
400
250
11
172
173
1500
900
500
131
51
90
400
250
12
1500
800
500
132
52
91
400
250
13
133
800
750
1500
500
400
174
53
92
134
250
14
500
175
1500
54
93
135
400
250
15
750
500
176
1400
300
94
95
55
136
250
16
750
500
177
1200
137
300
250
17
56
750
500
178
1200
96
138
300
250
18
57
750
500
179
1200
300
250
97
98
58
500
139
180
19
1200
750
140
300
250
59
500
181
700
20
21
300
225
66
100
1100
60
500
141
182
300
300
1100
700
142
200
61
500
183
22
1000
700
101
500
143
200
62
184
23
600
102
144
300
200
1000
63
500
300
185
200
24
1000
600
103
500
145
186
25
64
600
146
300
200
1000
104
500
187
26
65
600
147
300
200
1000
105
500
300
188
200
66
600
148
189
190
27
1000
106
500
300
200
28
67
600
107
500
149
1000
300
125
29
68
600
108
500
150
191
250
250
250
1000
151
300
69
70
30
600
109
500
192
1000
152
300
193
31
600
110
500
300
1000
71
600
111
500
153
194
250
32
300
1000
154
195
250
250
72
600
112
500
300
33
1000
155
196
73
300
300
34
600
113
500
156
197
1000
74
600
500
250
35
114
157
198
225
1000
75
300
199
200
36
600
115
500
158
200
1000
76
600
116
500
159
300
37
1000
300
77
600
117
500
160
38
1000
78
500
600
118
39
1000
79
500
560
119
40
1000
80
500
550
120
Transcribed Image Text:Cellphone Usage Data: Array of Average Monthly Expense Table C.2a. Table C.2a. (continued) Average Month Expense on Cellphone Use on Cellphone Use Among Females Average Monthly Expense on Cellphone Use Control Average Monthly Expense on Cellphone Use Control Number Average Monthly Expense on Cellphone Use Control Number Average Monthly Expense on Cellphone Use Control Number Control Number Control 200 Average Monthly Expense on Cellphone Use Number 201 Number 300 250 161 202 500 275 250 1 8000 162 203 41 121 500 250 4000 1000 163 204 250 42 81 122 500 250 3 2300 900 164 205 250 123 124 43 82 550 500 250 4 2000 900 165 44 83 500 500 250 5 2000 900 500 125 166 45 84 500 250 6. 2000 900 500 126 167 46 85 500 250 7 2000 900 500 127 168 47 86 500 250 8 2000 900 500 128 169 48 87 500 250 1800 900 500 129 170 49 88 400 250 10 1700 900 500 130 171 50 89 400 250 11 172 173 1500 900 500 131 51 90 400 250 12 1500 800 500 132 52 91 400 250 13 133 800 750 1500 500 400 174 53 92 134 250 14 500 175 1500 54 93 135 400 250 15 750 500 176 1400 300 94 95 55 136 250 16 750 500 177 1200 137 300 250 17 56 750 500 178 1200 96 138 300 250 18 57 750 500 179 1200 300 250 97 98 58 500 139 180 19 1200 750 140 300 250 59 500 181 700 20 21 300 225 66 100 1100 60 500 141 182 300 300 1100 700 142 200 61 500 183 22 1000 700 101 500 143 200 62 184 23 600 102 144 300 200 1000 63 500 300 185 200 24 1000 600 103 500 145 186 25 64 600 146 300 200 1000 104 500 187 26 65 600 147 300 200 1000 105 500 300 188 200 66 600 148 189 190 27 1000 106 500 300 200 28 67 600 107 500 149 1000 300 125 29 68 600 108 500 150 191 250 250 250 1000 151 300 69 70 30 600 109 500 192 1000 152 300 193 31 600 110 500 300 1000 71 600 111 500 153 194 250 32 300 1000 154 195 250 250 72 600 112 500 300 33 1000 155 196 73 300 300 34 600 113 500 156 197 1000 74 600 500 250 35 114 157 198 225 1000 75 300 199 200 36 600 115 500 158 200 1000 76 600 116 500 159 300 37 1000 300 77 600 117 500 160 38 1000 78 500 600 118 39 1000 79 500 560 119 40 1000 80 500 550 120
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