A recent study investigated whether cell phone users experience separation anxiety when they cannot access their phones. Because blood pressure increases with anxiety, the researchers used systolic blood pressure as an operational measure of anxiety. The experiment involved a random sample of cell phone users that were divided into two groups at random. One group of participants completed a survey while their phones were locked in a cabinet in a separate room and the other group of participants completed the same survey while their phones were nearby. (The survey questions were unrelated to cell phone use.) At the end of the survey, the researchers measured each participant's systolic blood pressure. The same experiment was conducted in Montreal, Toronto, Vancouver, and St. Zotique. The blood pressure data for all participants are attached (see picture). Use these data to answer the following question: determine talpha/2 for the 90% confidence interval around mcp-mncp for the data collected in montreal. Please answer to 5 decimal places.
A recent study investigated whether cell phone users experience separation anxiety when they cannot access their phones. Because blood pressure increases with anxiety, the researchers used systolic blood pressure as an operational measure of anxiety. The experiment involved a random sample of cell phone users that were divided into two groups at random. One group of participants completed a survey while their phones were locked in a cabinet in a separate room and the other group of participants completed the same survey while their phones were nearby. (The survey questions were unrelated to cell phone use.) At the end of the survey, the researchers measured each participant's systolic blood pressure. The same experiment was conducted in Montreal, Toronto, Vancouver, and St. Zotique. The blood pressure data for all participants are attached (see picture). Use these data to answer the following question: determine talpha/2 for the 90% confidence interval around mcp-mncp for the data collected in montreal. Please answer to 5 decimal places.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A recent study investigated whether cell phone users experience separation anxiety when they cannot access their phones. Because blood pressure increases with anxiety, the researchers used systolic blood pressure as an operational measure of anxiety. The experiment involved a random sample of cell phone users that were divided into two groups at random. One group of participants completed a survey while their phones were locked in a cabinet in a separate room and the other group of participants completed the same survey while their phones were nearby. (The survey questions were unrelated to cell phone use.) At the end of the survey, the
researchers measured each participant's systolic blood pressure. The same experiment was conducted in Montreal, Toronto, Vancouver, and St. Zotique. The blood pressure data for all participants are attached (see picture). Use these data to answer the following question: determine talpha/2 for the 90% confidence interval around mcp-mncp for the data collected in montreal. Please answer to 5 decimal places.
Transcribed Image Text:Montreal
Toronto
Vancouver
St. Zotique
Cell Phone (CP)| No Cell Phone
Cell Phone (CP) No Cell Phone
Cell Phone (CP) No Cell Phone
Cell Phone (CP) No Cell Phone
(NCP)
(NCP)
(NCP)
(NCP)
93
117
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113
136
100
154
108
141
116
162
141
118
101
129
113
90
120
131
113
127
93
129
91
88
110
169
94
113
101
71
106
118
125
106
118
117
87
128
118
104
89
117
115
133
120
123
107
127
126
100
88
145
142
126
70
112
143
162
115
108
115
104
101
134
130
145
103
134
109
125
105
108
133
70
114
104
135
96
107
113
120
127
111
107
104
115
133
129
79
121
98
156
113
84
120
131
90
114
127
106
96
113
65
111
91
85
101
129
132
128
104
119
108
116
99
106
127
132
139
114
107
123
122
123
91
107
121
117
103
151
120
120
106
68
135
96
97
142
81
120
157
119
113
117
145
110
92
112
139
128
109
98
150
96
117
131
110
78
104
99
93
97
145
110
101
146
138
99
92
97
123
137
113
130
96
127
123
110
141
127
115
91
139
70
89
140
89
129
106
133
102
109
105
110
123
99
118
137
107
113
138
148
107
76
110
121
131
150
127
137
135
130
77
117
103
110
110
132
85
128
97
149
87
132
70
101
108
119
101
113
96
136
121
112
104
144
127
126
132
144
106
94
129
126
112
162
114
119
132
133
125
108
103
106
119
140
99
118
107
151
118
144
142
98
111
121
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