Exercise 1t}: Determine whether the following is a random sample or not. 1. 2. 3. To select the students to attend the summer workshop in Baguio, the teacher told her class to count off, and then selected those even numbered students for the workshop. To study the average number of years a family has stayed in a Barangay, the barangay captain chose to interview the families around his residence. To nd the average number of births in hospitals per day, a researcher made a list of all hospitals in Metro Manila, and then selected every fth in the list. A survey of the prevailing cost of rice was undertaken in the seven key cities of the country. To select students for the student exchange program. The school decided to screen honor students from the College of Education