Question: Compare populations A double-blind study using random assignment was done of pregnant women in Denmark. Women were given fish oil or a placebo during

Compare populations A double-blind study using random assignment was done of pregnant women in Denmark. Women were given fish oil or a placebo during pregnancy. Their children were followed during the first 5 years of life to see if they developed asthma. The results are summarized in the table. (Bisgaard et al., "Fish Oil- Derived Fatty Acids in Pregnancy and Wheeze and Asthma in Offspring," New England Journal of Medicine, vol. 375: 2530-2539.) 29 1.5 What is the estimated standard error for constructing the confidence interval? (round to three decimal places) 0.0303 Developed asthma Yes No Fish oil Placebo 58 83 288 266 The researchers want to find out if there is a significant difference in the population proportions of children who develop asthma in the two groups.

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