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Should we conclude (for this second study) that the mean birthweight of children is higher (at level of significance 0.05) when their mothers

Should we conclude (for this second study) that the mean birthweight of children is higher (at level of significance 0.05) when their mothers

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Should we conclude (for this second study) that the mean birthweight of children is higher (at level of significance 0.05) when their mothers receive prenatal nutritional counseling? That is, should we reject the null hypothesis (at level of significance 0.05? Using complete sentences, explain clearly how you reached your conclusion (using the critical number) O A. There is sufficient evidence that the mean birthweight of children is higher when their mothers receive prenatal nutritional counseling. B. There is not sufficient evidence that the mean birthweight of children is higher when their mothers receive prenatal nutritional counseling.
Transcribed Image Text:Should we conclude (for this second study) that the mean birthweight of children is higher (at level of significance 0.05) when their mothers receive prenatal nutritional counseling? That is, should we reject the null hypothesis (at level of significance 0.05? Using complete sentences, explain clearly how you reached your conclusion (using the critical number) O A. There is sufficient evidence that the mean birthweight of children is higher when their mothers receive prenatal nutritional counseling. B. There is not sufficient evidence that the mean birthweight of children is higher when their mothers receive prenatal nutritional counseling.
Now suppose instead our study involves n = 100 matched pairs of women; and we find that the mean differenced (between birthweights for mothers who have received such counseling and those who have not) is given by d = 33 with %3D standard deviation s, = 636. (We continue to use a right- tailed test and level of significance 0.05.) The degrees of freedom is The value of the test statistic TS = The critical value t, D.
Transcribed Image Text:Now suppose instead our study involves n = 100 matched pairs of women; and we find that the mean differenced (between birthweights for mothers who have received such counseling and those who have not) is given by d = 33 with %3D standard deviation s, = 636. (We continue to use a right- tailed test and level of significance 0.05.) The degrees of freedom is The value of the test statistic TS = The critical value t, D.
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