STAT 100 Study Guide - Simple Random Sample, Observational Study, Dependent And Independent Variables

• School: Simon Fraser University
• Department: Statistics
• Course: STAT 100
• Professor: Derek Bingham

Document Summary

Sample stat 100 - midterm 1: do not panic. Useful formula: for estimating a population proportion in a simple random sample, the margin of error for 95% confidence is roughly equal to. ___________________________________________: (4 points) a study was performed on the effects of distractions on studying. A room at a university was set up with a sound system and a tv. Student volunteers who entered the room were exposed to one of: (1) loud rock music, (2) soft baroque music, (3) an adventure movie on the tv, or (4) quiet (no tv or music). The student volunteers first took a brief pre-test. The students were placed into groups according to scores on the pre-test: the top 4 formed the first group, the next 4 highest formed the second group, and so on. There were 20 volunteers, so there were 5 groups.