Toastmasters international cites a report by gallop poll that 40% of americans fear public speaking. a student believes that less than 40% of students at her school fear public speaking. she randomly surveys 361 schoolmates and finds that 135 report they fear public speaking. conduct a hypothesis test to determine if the percent at her school is less than 40%.

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a researcher conducts a comparison of the comments made in a publicly available blog and the blogger's comments on a similar topic in a weekly magazine. undergraduate students in a field methods class are assigned a research question and asked to interview another classmate, to be followed by a class discussion on interview techniques. a cognitive psychologist enrolls undergraduate students for a computer-based study about the effect of mood on problem-solving behaviors. a researcher sets up a meeting with the superintendent of a large and diverse public school system to get data about the ethnic composition of the school system and the number of students receiving free lunches.