On a Chilly Spring Afternoon,10 Lab Sections of a Statistics

Multiple Choice

On a chilly spring afternoon,10 lab sections of a statistics class all have full attendance.The 10 lab sections each have the same number of students enrolled in it.A class evaluation is about to be administered to some of the students.It has been decided to first randomly select 3 of the 10 lab sections and then give the evaluation to a simple random sample of one-fourth of the students in those sections.Among the students answering the survey,77% said they enjoy the statistics class.Which statement(s) correctly describe the value 77%?

A) A sample proportion
B) A statistic
C) A parameter
D) A stratum