A confidence interval estimating the difference between the…

A confidence interval estimating the difference between the proportion of high school students who prefer virtual learning and the proportion of college students who prefer virtual learning results in the following:  Order of difference taken: High School – College Resulting 95% confidence interval: ( – 0.02, 0.04) What does this mean?

A study was conducted to see if students’ and faculty member…

A study was conducted to see if students’ and faculty members’ perceptions differed on appropriateness of various classroom behaviors. A random sample of 173 students and 98 faculty responded to a question about the appropriateness of wearing hats in class. On a scale of 1 (totally inappropriate) to 5 (totally appropriate), the sampled students’ mean rating was 2.8 with a standard deviation of 1. The sampled faculty members’ mean rating was 3.63 with a standard deviation of 1. Which one of the following is the correct test statistic for this test?