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To compare the effect of hospital prenatal nutritional counseling on newborn birthweights, we conduct a matched-pair study of women who obtain prenatal care at a certain hospital, matching women who have been given the nutritional counseling with those who have not. Our null hypothesis is that there is no difference in birthweights. For each d, we subtract the birth-weight of the mother who did not receive counseling from the birth-weight of the matched mother who did receive counseling. We use a one-tailed test (with the right tail) and level of significance a =0.05. Suppose our study involves n = 50 matched pairs of women; and we find that the mean difference d (between birthweights for mothers who have received such counseling and those who have not) is given by d = 62 with standard deviation = 696. The degrees of freedom is The value of the test statistic TS = The critical value t,

To compare the effect of hospital prenatal nutritional counseling on newborn birthweights, we conduct a matched-pair study of women who obtain prenatal care at a certain hospital, matching women who have been given the nutritional counseling with those who have not. Our null hypothesis is that there is no difference in birthweights. For each d, we subtract the birth-weight of the mother who did not receive counseling from the birth-weight of the matched mother who did receive counseling. We use a one-tailed test (with the right tail) and level of significance a =0.05. Suppose our study involves n = 50 matched pairs of women; and we find that the mean difference d (between birthweights for mothers who have received such counseling and those who have not) is given by d = 62 with standard deviation = 696. The degrees of freedom is The value of the test statistic TS = The critical value t,

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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To compare the effect of hospital prenatal nutritional counseling on newborn birthweights, we conduct a matched-pair study of women who obtain prenatal care at a certain hospital, matching women who have been given the nutritional counseling with those who have not. Our null hypothesis is that there is no difference in birthweights. For each d, we subtract the birth-weight of the mother who did not receive counseling from the birth-weight of the matched mother who did receive counseling. We use a one-tailed test (with the right tail) and level of significance a =0.05. Suppose our study involves n = 50 matched pairs of women; and we find that the mean difference d (between birthweights for mothers who have received such counseling and those who have not) is given by d = 62 with standard deviation s, = 696. The degrees of freedom is The value of the test statistic TS = The critical value t,
Transcribed Image Text:To compare the effect of hospital prenatal nutritional counseling on newborn birthweights, we conduct a matched-pair study of women who obtain prenatal care at a certain hospital, matching women who have been given the nutritional counseling with those who have not. Our null hypothesis is that there is no difference in birthweights. For each d, we subtract the birth-weight of the mother who did not receive counseling from the birth-weight of the matched mother who did receive counseling. We use a one-tailed test (with the right tail) and level of significance a =0.05. Suppose our study involves n = 50 matched pairs of women; and we find that the mean difference d (between birthweights for mothers who have received such counseling and those who have not) is given by d = 62 with standard deviation s, = 696. The degrees of freedom is The value of the test statistic TS = The critical value t,
Should we conclude (for this first 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) 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 first 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) 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.
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