d) 0.942 e) 0.058 Question 15 Your answer is CORRECT. This is a written question

Question

d) 0.942 e) 0.058 Question 15 Your answer is CORRECT. This is a written question, worth 10 points. DO NOT place the problem code on the answer sheet. A proctor will fill this out after exam submission. Show all steps (work) on your answer sheet for full credit. Problem Code: 1521 A study of iron deficiency in infants compared samples of infants whose mothers chose different ways of feeding them. One group contained breast-fed infants. The children in another group were fed a standard baby formula without any iron supplements. Her are summary results on blood hemoglobin levels at l2 months of age Group Breast-fed 27 153 2.2 ormula Loading [MathJaxVextensiond Mathz.oomjs moglobin level is greater among formula-fed babies. State the R E5 icance test on your hypothesis. Report the test statistic and p-value. State 69 292016 your conclusion in terms of the issue

Explanation / Answer

Ho:There is no significance difference between means of three groups

H1:There is a significance difference between means of three groups

ALPHA:5%

Test statistic:

we use ANOVA one way

Fcal=9.135

P value=0.0037

conclusion:

P<0.05, we reject the H0. Hence claim is significant

Sorce df ss ms F cal F critical P value Regression 1 38.02 38.02 9.13488 4.006873 0.003729 Residual 58 241.4 4.162069 Total 59 279.42

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