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Could preventing iron deficiency in infants by delaying the clamping of the umbilical cord help promote child development? Healthy Swedish newborns were randomly assigned to have their umbilical cord clamped either right after birth or after a three minute delay. Four years later, parents were instructed to administer the Ages and Stages Questionnaire (ASQ) to assess psychomotor development in their child. The ASQ is scored on a scale of 0 to 300, with higher scores indicating more developmental milestones reached. The table contains the summary findings. Group Delayed clamping Early clamping n x S 130278.9 21.6 115 275.5 27.6 Obtain a 95% confidence interval for the difference in mean ASQ score for the population of four-year-old Swedish children with delayed and early clamping at birth. O Macmillan Learning Use SE and t* to find the upper and lower bounds of the 95% confidence interval. Enter your answers rounded to one decimal place. lower bound= upper bound=

Could preventing iron deficiency in infants by delaying the clamping of the umbilical cord help promote child development? Healthy Swedish newborns were randomly assigned to have their umbilical cord clamped either right after birth or after a three minute delay. Four years later, parents were instructed to administer the Ages and Stages Questionnaire (ASQ) to assess psychomotor development in their child. The ASQ is scored on a scale of 0 to 300, with higher scores indicating more developmental milestones reached. The table contains the summary findings. Group Delayed clamping Early clamping n x S 130278.9 21.6 115 275.5 27.6 Obtain a 95% confidence interval for the difference in mean ASQ score for the population of four-year-old Swedish children with delayed and early clamping at birth. O Macmillan Learning Use SE and t* to find the upper and lower bounds of the 95% confidence interval. Enter your answers rounded to one decimal place. lower bound= upper bound=

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Could preventing iron deficiency in infants by delaying the clamping of the umbilical cord help promote child development? Healthy Swedish newborns were randomly assigned to have their umbilical cord clamped either right after birth or after a three minute delay. Four years later, parents were instructed to administer the Ages and Stages Questionnaire (ASQ) to assess psychomotor development in their child. The ASQ is scored on a scale of 0 to 300, with higher scores indicating more developmental milestones reached. The table contains the summary findings. Group Delayed clamping Early clamping n x S 130 278.9 21.6 115 275.5 27.6 Obtain a 95% confidence interval for the difference in mean ASQ score for the population of four-year-old Swedish children with delayed and early clamping at birth. O Macmillan Learning Use SE and t* to find the upper and lower bounds of the 95% confidence interval. Enter your answers rounded to one decimal place. lower bound = upper bound =
Transcribed Image Text:Could preventing iron deficiency in infants by delaying the clamping of the umbilical cord help promote child development? Healthy Swedish newborns were randomly assigned to have their umbilical cord clamped either right after birth or after a three minute delay. Four years later, parents were instructed to administer the Ages and Stages Questionnaire (ASQ) to assess psychomotor development in their child. The ASQ is scored on a scale of 0 to 300, with higher scores indicating more developmental milestones reached. The table contains the summary findings. Group Delayed clamping Early clamping n x S 130 278.9 21.6 115 275.5 27.6 Obtain a 95% confidence interval for the difference in mean ASQ score for the population of four-year-old Swedish children with delayed and early clamping at birth. O Macmillan Learning Use SE and t* to find the upper and lower bounds of the 95% confidence interval. Enter your answers rounded to one decimal place. lower bound = upper bound =
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