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, theresearchers measured each participant's systolic blood pressure. The same experiment was conducted in Montreal, Toronto, Vancouver, and St. Zotique. The blood pressure data needed is below. Use these data to answer the following question: compute r2 for the data collected in st. zotique. Please answer to 5 decimal places. Cell Phone (CP) No Cell Phone (NCP) 100 154 101 129 93 129 101 71 87 128 120 123 142 126 115 104 109 104 135 107 98 156 127 106 101 129 99 106 122 123 103 151 96 113 128 109 78 104 101 146 113 130 127 115 89 129 110 123 148 150 103 110 87 132 96 136 126 112 162 108 98 99 94 151

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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Question

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, theresearchers measured each participant's systolic blood pressure. The same experiment was conducted in Montreal, Toronto, Vancouver, and St. Zotique. The blood pressure data needed is below. Use these data to answer the following question: compute r² for the data collected in st. zotique^. Please answer to 5 decimal places.

Cell Phone (CP)	No Cell Phone (NCP)
100	154
101	129
93	129
101	71
87	128
120	123
142	126
115	104
109
104	135
	107
98	156
127	106
101	129
99	106
122	123
103	151
96
	113
128	109
78	104
101	146
113	130
127	115
89	129
110	123
148
	150
103	110
87	132
96	136
126
112	162
	108
98	99
94	151