We wish to compare three interventions for preterm infants, with regard to effects on the infants’ ...

  

We wish to compare three interventions for preterm infants, with regard to effects on the infants’ heart rates: Nonnutritive Sucking (NNS), Nonnutritive Sucking plus Rocking (NNSR), and Rocking (R). Nine infants are randomly assigned to six different orderings of the three treatments. Heart rate, the dependent variable, is measured after each treatment. The data are summarized in the following table.
(Click herefor the data set in Google Sheets)

  

NNS

NNSR

R

 

145 

144 

168 

 

150 

148 

161 

 

157 

162 

176 

 

171 

176 

191 

 

143 

149 

152 

 

132 

135 

140 

 

152 

155 

170 

 

148 

151 

157 

 

165 

170 

183 

Using a 1% level of significance, test the claim that interventions do not influence infant heart rates (i.e. mean heart rates are equal for all three interventions).
 

Results:
p-value = _______? (round answer to nearest hundredth of a percent – 2.35%)
 

Conclusion:
We ____________ sufficient evidence to support the claim that intervention type does influence infant heart rate (p ______ 0.01). (Use “have” or “lack” for the first blank and “<” or “>” for the second blank.)