The weight and systolic blood pressure of 30 randomly selected males in the age group 25-30 are shown below. Assuming that weight and blood pressure (BP) are normally distributed. a) Find a regression line relating systolic blood pressure wo weight b) Estimate the coefficient of determination and interpret your findings c) Test the hypothesis that p=0 d) Test the hypothesis that p=0.6. e) Find the 95% CI for p f) Consider the weight and blood pressure and fit a non-intercept model to the data and compare it to the model obtain in part (a). which model would you consider superior? Subject Weight Systolic BP Subject Weight Systolic BP 1 165 130 16 172 153 2 167 133 17 159 128 3 180 150 18 168 132 4 155 128 19 174 149 5 212 151 20 183 158 6 175 146 21 215 150 7 190 150 22 195 163 8 210 140 23 180 156 9 200 148 24 143 124 10 149 125 25 240 170 11 158 133 26 235 165 12 169 135 27 192 160 13 170 150 28 187 159 14 156 131 29 200 137 15 185 127 30 220 140
The weight and systolic blood pressure of 30 randomly selected males in the age group 25-30 are
shown below. Assuming that weight and blood pressure (BP) are normally distributed.
a) Find a regression line relating systolic blood pressure wo weight
b) Estimate the coefficient of determination and interpret your findings
c) Test the hypothesis that p=0
d) Test the hypothesis that p=0.6.
e) Find the 95% CI for p
f) Consider the weight and blood pressure and fit a non-intercept model to the data and
compare it to the model obtain in part (a). which model would you consider superior?
Subject Weight Systolic BP Subject Weight Systolic BP
1 165 130 16 172 153
2 167 133 17 159 128
3 180 150 18 168 132
4 155 128 19 174 149
5 212 151 20 183 158
6 175 146 21 215 150
7 190 150 22 195 163
8 210 140 23 180 156
9 200 148 24 143 124
10 149 125 25 240 170
11 158 133 26 235 165
12 169 135 27 192 160
13 170 150 28 187 159
14 156 131 29 200 137
15 185 127 30 220 140
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