Portland Community College serves nearly 73,000 full-time and part-time students in the greater Portland area at four main campuses (SE, Cascade, Sylvania, and RC). Student Affairs would like to know how students get to campus. They randomly select 250 students from each of the four main campus and ask them how they got to classes on campus. The following are the results of their survey:
Public Transportation: 435
Driving: 475
Biking: 65
Walking: 30
Identify the population and state its size.
Identify the sample and state its size.
What sampling method was used?
What type of data was collected?
Give the statistic for the percentage of students who use public transportation.
Lee et al., Math in Society, Statistics — Chapter 3 Review, Exercise 1