A study of iron deficiency in infants compared samples of infants following different feeding regimens. Here are the summary results on hemoglobin levels at 12 months of age for two samples of infants Group n x s Breast-fed 23 13.3 1.7 Formula 19 12.4 1.8   Is there significant evidence that the mean hemoglobin level is higher among breast-fed babies? a. State the null and alternative b. Give the p-value c. Give a conclusion for the hypothesis test.

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 A study of iron deficiency in infants compared samples of infants following different feeding regimens. Here are the summary results on hemoglobin levels at 12 months of age for two samples of infants

Group

n

x

s

Breast-fed

23

13.3

1.7

Formula

19

12.4

1.8

 

Is there significant evidence that the mean hemoglobin level is higher among breast-fed babies?

a. State the null and alternative

b. Give the p-value

c. Give a conclusion for the hypothesis test.

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