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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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 Hypothesis Test of the Difference Between Two INDEPENDENT Means

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A study of iron deficiency among infants compared different feeding regimens. One group contain breast fed infants, while the other group received a standard baby formula without iron supplements. After six months the hemoglobin levels in the infants' blood were measured. The table summarizes these results. 23 breast fed babies: mean hemoglobin = 13.3 with a st. dev. = 1.7, 19 formula fed babies: mean hemoglobin = 12.4 with a st. dev. = 1.8. Sample Size Mean Standard Deviation Breast fed 23 13.3 1.7 Formula Fed 19 12.4 1.58 You will be using a 95% confidence level to test the claim that breast fed babies have higher hemoglobin levels than formula fed babies. You may assume both samples come from normally distributed populations. *Please let the breast fed babies be sample 1 and the formula fed babies be sample 2.*
Transcribed Image Text:A study of iron deficiency among infants compared different feeding regimens. One group contain breast fed infants, while the other group received a standard baby formula without iron supplements. After six months the hemoglobin levels in the infants' blood were measured. The table summarizes these results. 23 breast fed babies: mean hemoglobin = 13.3 with a st. dev. = 1.7, 19 formula fed babies: mean hemoglobin = 12.4 with a st. dev. = 1.8. Sample Size Mean Standard Deviation Breast fed 23 13.3 1.7 Formula Fed 19 12.4 1.58 You will be using a 95% confidence level to test the claim that breast fed babies have higher hemoglobin levels than formula fed babies. You may assume both samples come from normally distributed populations. *Please let the breast fed babies be sample 1 and the formula fed babies be sample 2.*
Question 1 The null hypothesis, Ho, is [ Select ] [ Select ] [ Select ] The alternative hypothesis, H , is [ Select ] [ Select ] [ Select ]
Transcribed Image Text:Question 1 The null hypothesis, Ho, is [ Select ] [ Select ] [ Select ] The alternative hypothesis, H , is [ Select ] [ Select ] [ Select ]
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