A teacher interested in determining the effect of a new computer program on learning to read conducted a study. One hundred students were randomly assigned to one of two groups. The first group used the computer program while the second group did not. Both groups were tested to determine how much their reading levels improved. The results for the two groups were compared. What kind of study is this? (2 points) This is an experiment because a treatment was applied to a group. This is an experiment because students were able to choose which group to join. This is a survey because students were randomly assigned to groups. This is a survey because a treatment was applied to both groups. Two studies were completed in Florida. One study in northern Florida involved 2,000 patients; 64% of them experienced flulike symptoms during the month of December. The other study, in southern Florida, involved 3,000 patients; 54% of them experienced flulike symptoms during the same month. Which study has the smallest margin of error for a 95% confidence interval? (2 points) The northern Florida study with a margin of error of 1.8%. The southern Florida study with a margin of error of 1.8%. The Two studies were completed in Florida. One study in northern Florida involved 2,000 patients; 64% of them experienced flulike symptoms during the month of December. The other study, in southern Florida, involved 3,000 patients; 54% of them experienced flulike symptoms during the same month. Which study has the smallest margin of error for a 95% confidence interval? (2 points) The northern Florida study with a margin of error of 1.8%. The southern Florida study with a margin of error of 1.8%. The northern Florida study with a margin of error of 2.1%. The southern Florida study with a margin of error of 2.1%. Florida study with a margin of error of 2.1%. The southern Florida study with a margin of error of 2.1%.