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.) Developed Fish oil Placebo asthma Yes 58 288 83 266 No 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. 30 1 point What does the 95% confidence interval suggest? Since the interval does not include zero, it suggests that there is a statistically significant difference between the two groups in terms of the proportion of children who develop asthma. Since the interval does not include zero, it suggests that there is no significant difference between the two groups in terms of the proportion of children who develop asthma. Since the interval includes zero, it suggests that there is a statistically significant difference between the two groups in terms of the proportion of children who develop asthma. Since the interval includes zero, it suggests that there is no significant difference between the two groups in terms of the proportion of children who develop asthma.