Question
In: Statistics and Probability
The birth weights for two groups of babies were compared in a study. In one group...
The birth weights for two groups of babies were compared in a study. In one group the mothers took a zinc supplement during pregnancy. In another group, the mothers took a placebo. A sample of 227 babies in the zinc group had a mean birth weight of 3255 grams. A sample of 276 babies in the placebo group had a mean birth weight of 30023002 grams. Assume that the population standard deviation for the zinc group is 708 grams, while the population standard deviation for the placebo group is 661 grams. Determine the 90% confidence interval for the true difference between the mean birth weights for "zinc" babies versus "placebo" babies.
Step 2 of 3 :
Calculate the margin of error of a confidence interval for the difference between the two population means. Round your answer to six decimal place
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orchestra answered 1 year agoRelated Solutions
The birth weights for two groups of babies were compared in a study. In one group...
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LaTeX: H_0: \bar{x} = 1000 grams \\H_a: \bar{x}<1000 grams H
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Group of answer choices
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