The EPIC-Norfolk study, a study of diet and cancer in Great Britain, was performed to assess the relationship between dietary intake of vitamin C, plasma levels of vitamin C (in blood), and other predictors. One hypothesis is that smokers might have different vitamin C intake and vitamin C plasma levels than nonsmokers. Dietary intake of vitamin C was obtained using 7-day diet records in which a subject recorded what he or she ate in real time and a computer program was used to estimate nutrient intake based on the diet record data. The data obtained for current smokers and nonsmokers are presented as follows: Association between current smoking and diet record intake of Njtamin C in the EPIC-Norfolk Study Mean vitamin C Group intake (mg/day) sd (mg/day) Nonsmokers 92.5 50.4 306 Smokers 57.0 26.3 17 Diet record intake includes intake from foods but not from vitamin supplements. Assuming unequal variances, is there a significant difference of the mean of the Vitamin C intake between the two groups?

The EPIC-Norfolk study, a study of diet and cancer in Great Britain, was performed to assess the relationship between dietary intake of vitamin C, plasma levels of vitamin C (in blood), and other predictors. One hypothesis is that smokers might have different vitamin C intake and vitamin C plasma levels than nonsmokers. Dietary intake of vitamin C was obtained using 7-day diet records in which a subject recorded what he or she ate in real time and a computer program was used to estimate nutrient intake based on the diet record data. The data obtained for current smokers and nonsmokers are presented as follows: Association between current smoking and diet record intake of Njtamin C in the EPIC-Norfolk Study Mean vitamin C Group intake (mg/day) sd (mg/day) Nonsmokers 92.5 50.4 306 Smokers 57.0 26.3 17 Diet record intake includes intake from foods but not from vitamin supplements. Assuming unequal variances, is there a significant difference of the mean of the Vitamin C intake between the two groups?

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter4: Writing Linear Equations

Section: Chapter Questions

Problem 14CR

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