Question

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 148 151 157 175 180 202 145 144 171 176 165 170 183 143 149 152 152 155 170 132 135 140 150 148 161 16B 191 Using a 19 level of significance, test the claim that interventions do not influence infant heart rates (ie.mean heart rates are equal for all three interventions). Results: p-value (round answer to nearest hundredth of a percent - 2.35%) Conclusion: We lack sufficient evidence to support the claim that intervention type does influence infant heart rate (p 0.01). (Use "have" or "ack" for the first blank and cor" for the second blank.)

Answer 1

Result:

P-value = 11.84%

Conclusion: We lack sufficient evidence to support the claim that intervention type does influence infant heart rate (p > 0.01)

SS df MS F P-value ANOVA Source of Variation Between Groups Within Groups Total Fcrit 5.6136 2 641.3704 2.3349 0.1184 1282.741 6592.444 7875.185 24 274.6852 26