Question: 2. The following data were collected in an experiment designed to investigate the impact of different positions of the mother during ultrasound on fetal heart

2. The following data were 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 assigned to one position and have the fetal heart rate measured in that position.Each woman is between 28-32 weeks gestation.The data are shown below.

Back Side Sitting Standing

140

141

144

147

144

143

145

146

145

147

148

141

144

148

149

139

136

144

145

Mean = 142.0

Mean = 141.8

Mean = 145.6

Mean =146.8

Is there a significant difference in mean fetal heart rates by position?Run the test at a 5% level of significance.

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