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The data in the table below are collected in an experiment designed to investigate the impact of different positions of the mother during ultrasound on fetal heart rate. Fetal heart rate is measured by ultrasound in beats per minute. The study includes 20 women who are each assigned to one position and have the fetal heart rate measured in that position. Each woman is between 28 weeks and 32 weeks gestation. Is there a significant difference in mean fetal heart rates by position? Run the test at 5% level of significance.
Table 7-7
Back Side Sitting Standing
140 141 144 147144 143 145 145146 145 147 146141 144 148 149139 136 144 145
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